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Author Topic:   New Moeller 24-gallon On-Deck Fuel Tank
Jeff posted 12-06-2009 07:41 PM ET (US)   Profile for Jeff   Send Email to Jeff  
Yesterday while at Lockeman's Hardware Dave Zammitt had out for display a new fuel tank he is stocking. Seems like someone at Moeller saw a opportunity to produce a tank that Whaler owners would want to replace their old deteriorating Pate tank.

This new Moeller tank of course is made to fit under the RPS but, it also has a couple other nice features. One is the tank was designed with a fuel fill that is angled back and gives you great clearance behind the seat cushion for filling. It also allows the gauge to be read easily. The best thing is the tank is made in white which will not fade over time (like the red turning pink from UV).

Here are a couple images (click on them to view full scale): ?action=view¤t=DSC_9960.jpg ?action=view¤t=DSC_9958.jpg ?action=view¤t=DSC_9959.jpg&t=1260146428782

Here it is on Moeller's Web site:

BlueMax posted 12-06-2009 09:39 PM ET (US)     Profile for BlueMax    
Great find!!

Moeller Product # 031626 Listed at $199.95 at an on-line seller. It's beginning to look a Lot like Christmas....!

(Thanks Jeff)


BlueMax posted 12-06-2009 09:59 PM ET (US)     Profile for BlueMax    
Another site reports 13 on hand at $206.76.
samwhaler posted 12-06-2009 10:25 PM ET (US)     Profile for samwhaler    
Isn't this the same tank?


GreatBayNH posted 12-07-2009 05:16 AM ET (US)     Profile for GreatBayNH    
Same tank, yes. This was discussed back in October. Nice to finally have pictures of the real deal. Now if someone could post images of one installed on a Monauk 150 or 170 we'd be all set.
L H G posted 12-07-2009 03:13 PM ET (US)     Profile for L H G    
I thought portable, on deck fuel tanks had to be in red color? What changed? Pate's were considered permanently installed.
dscew posted 12-07-2009 03:22 PM ET (US)     Profile for dscew    
I'd like to see an installation under a classic Whaler RPS. Anyone done this yet?
johnhenry posted 12-07-2009 03:41 PM ET (US)     Profile for johnhenry  Send Email to johnhenry     
I will let you know how it fits on my 170 in January. That will be my Xmas present to myself.
fourdfish posted 12-07-2009 04:38 PM ET (US)     Profile for fourdfish  Send Email to fourdfish     
That tank hardly qualifies as portable. As far as on deck,
I have seen several on deck tanks in various boats which were not red in color.
kwik_wurk posted 12-07-2009 05:19 PM ET (US)     Profile for kwik_wurk  Send Email to kwik_wurk     
It could use a small indent at the bottom (center-line) so the fuel line could be run into the standard tunnel on classic Montauks. {Since the tank will likely be covering the hole, unless it is up on chocks.}

number9 posted 12-07-2009 08:18 PM ET (US)     Profile for number9  Send Email to number9     
I would think the fore to aft dimension of the tank bottom/sides is reduced to allow access to the tunnel. The reduction of two gallons capacity requires loosing some volume.
Chuck Tribolet posted 12-08-2009 12:48 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
The fore/aft dimension is a couple of inches MORE than my
Pate, which just clears the hole to the tunnel.


pglein posted 12-11-2009 11:29 AM ET (US)     Profile for pglein  Send Email to pglein     
I believe it has to be tied down to not be considered portable. No big deal.

As for the color, I think that's a DOT requirement, which means it's only a concern when on the road anyway.

GreatBayNH posted 12-11-2009 08:26 PM ET (US)     Profile for GreatBayNH    
Portability has to do with capacity not so much how it's secured. I can't recall the exact capacity but I believe if it's over 7 or 8 gallons it becomes considered non-portable. Basically, if you can't pick it up and toss it overboard during a fire, it aint portable. At least in the eyes of the Coast Guard Auxilary.

We had this discussion before. I'll see if I can't find the thread.

R T M posted 12-11-2009 08:36 PM ET (US)     Profile for R T M    
I think part of that discussion mentioned that non portable tanks (over 7 gallons?) had to be vented through the hull and not inside the hull.


GreatBayNH posted 12-11-2009 08:36 PM ET (US)     Profile for GreatBayNH    
Very long thread discussing what may or may not be a legal on-deck portable marine fuel tank.

number9 posted 12-11-2009 11:10 PM ET (US)     Profile for number9  Send Email to number9     
Apparently outboard powerboat permanent or portable tanks are not included in/under the CFRs that regulate marine fuel systems. Color and hold down system can be our choice. They do come under the CFRs for ventilation.

"183.501 Applicability.
(a) This subpart applies to all boats that have gasoline engines, except outboard engines, for electrical generation, mechanical power, or propulsion."

"183.620 Natural ventilation system.
(a) Except for compartments open to the atmosphere, a natural ventilation system that meets the requirements of Sec. 183.630 must be provided
for each compartment in a boat that:
(4) Contains a fuel tank that vents into that compartment; or
Portable Fuel Tanks"

"Compartments used to store vented portable fuel tanks or containers are required to be equipped with natural ventilation. Cockpit seat lockers in auxiliary sailboats are often used as fuel tank compartments for portable outboard motor fuel tanks. If this fuel tank vents into the locker, then natural ventilation of this locker is required."

Ridge Runner posted 12-13-2009 08:32 AM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
I just ordered this tank as a replacement for the Pate on a 2005 170 re-power project. I will post pictures when I have finished the install. I purchased it from Defender Marine jsp?path=-1|311|302335|7364|939818|940754&id=1349736&cartId=1550619
frontier posted 01-03-2010 05:59 PM ET (US)     Profile for frontier  Send Email to frontier     
Has anyone installed one of these yet?
Room for the fuel hose to the tunnel?
high sierra posted 01-03-2010 07:42 PM ET (US)     Profile for high sierra    
I installed mine forward of the console on my 18 Outrage finishing yesterday. Looks very good with a great transfer of weight (300 lb) and a fresher supply of fuel. Going fishing on Tuesday weather permitting to try it out. high sierra
high sierra posted 01-05-2010 10:40 PM ET (US)     Profile for high sierra    
I took the 18 Outrage out today with the new moeller tank installed forward of the console. Found the boat to ride much better and steadier with very little porpoising. I only put 18 gallons in tank. It sits higher in the water at the transom by about 3 inches. The installation removed about 300 lbs from the rear of the boat when the 63 gallon tank was filled compared with the front tank being filled dramatically changing the center of gravity.
Other than loosing a downrigger ball, the GPS quitting and both bilge pumps freezing solid and not pumping, It was a great day. high sierra
high sierra posted 01-06-2010 12:05 PM ET (US)     Profile for high sierra    
That should be losing not loosing. high sierra
foghorn posted 01-06-2010 03:47 PM ET (US)     Profile for foghorn  Send Email to foghorn     
I had a lengthy e-mail exchange with some very patient and helpful people at Moeller regarding this new tank, and whether or not it covered the tunnel when installed. They sent me a picture of an installation on a classic Montauk, and the tank covered the tunnel access. The fuel hose in the picture was installed down a hole drilled through the floor just aft of the tank. The pictures were provided to Moeller by a " satisfied customer ", sent to help me understand how to install it. I sensed that further discussion about the need for the hole would have been unproductive. The tank has grooves to accomodate holddown straps, and one more of those under the tank would have been perfect.
dscew posted 01-06-2010 07:10 PM ET (US)     Profile for dscew    
I'm going to purchase one of those tanks and mount it on a couple of thicknesses of Drydek (sp?) or Starboard to get enough height to run the fuel hose under it. Probably will cut out enough of the just material to go around the deck opening. It looks like a great tank, but it would have been nice to see a middle channel to accomodate the fuel.
Phil T posted 01-06-2010 11:01 PM ET (US)     Profile for Phil T  Send Email to Phil T     
There has been articles posted on fitting a large single tank under the RPS. One or more of these discussed the tank covering the OEM access slot.

On my former boat, a 1987 Montauk, a prior owner has drilled a single hole into the rigging tunnel, aft of the pads, along the centerline to route a fuel line. This hole was finished with a off the shelf flaired drain tube.

This method is available in addition to blocking the tank to gain access the tunnel.

For a photo use the zoom controls (top right corner) above this photo to see it up close: 1987Montauk#5090543628591887426

Chuck Tribolet posted 01-07-2010 12:15 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
If you have to drill another hole, Moeller didn't get it right.

Rats. I've got a Pate that I need to replace pretty quick.


OldDemps posted 01-08-2010 02:02 AM ET (US)     Profile for OldDemps  Send Email to OldDemps     
Does the stock fuel line [on a 2003 Boston Whaler 170 MONTAUK] need to be moved to install the new 24-gallon white Moeller fuel tank part #031626 under the RPS? Or, does it slide right in without modification? I know there has been a lot of discussion on the new Moeller 24-gallon white gas tank but no one has posted photos on their install or stated if the fuel line needs to be moved for installation. Thanks--OldDemps, San Francisco Bay
jimh posted 01-08-2010 02:09 AM ET (US)     Profile for jimh  Send Email to jimh     
From the dimensions of the 24-gallon Moeller fuel tank you should be able to get a good idea if it will fit in the space under the seat in a 2003 Boston Whaler 170 MONTAUK.
high sierra posted 01-08-2010 11:48 AM ET (US)     Profile for high sierra    
OldDemps I installed a Moeller on my previous boat , a 170 and the gas line has to be moved about4 inches to clear the tank. You have to drill a new hole for it and dig out a little foam to access the tunnel. It all fits under the RPS. high sierra
OldDemps posted 01-08-2010 02:46 PM ET (US)     Profile for OldDemps  Send Email to OldDemps     
My white 24-gallon Moeller tank arrived yesterday, and, if I have to modify my boat to accommodate their "specially designed tank for Montauk's," I'm going to be [displeased]. Otherwise I'm very psyched about the tank, even though it looks like the fuel pick-up is off the bottom of the tank about 1.25-inch. Not sure if you [are] getting the full 24 gallons [as a useful capacity]. I will take [the Moeller 24-gallon white on-deck fuel tank] down to my boat and give it a dry fitting. The local Whaler dealer says they install a lot of them, but I haven't seen one on the high seas.

Thanks for you help and I will reply with my findings.

Old Demps

jimh posted 01-09-2010 02:44 PM ET (US)     Profile for jimh  Send Email to jimh     
My understanding is the 24-gallon white on-deck Moeller fuel tank is a rather new product. Given its very recent introduction to the marketplace, it is not surprising that these fuel tanks are currently not widely seen on existing small boat installations.
L H G posted 01-09-2010 07:30 PM ET (US)     Profile for L H G    
That high fuel pickup sounds like a manufacturing defect. On my Moellers,it sits right off the bottom 1/8" at most.
Raaaaay posted 01-11-2010 03:24 PM ET (US)     Profile for Raaaaay  Send Email to Raaaaay     
Will this same tank fit under a RPS on a 1973 Outrage? I need a tank for temporary use until I replace my in-hull tank. My boat currently has an aftermarket RPS. but I recently purchased a used RPS that I am restoring

I want to make sure that this white Moeller will be the right tank for my restored RPS. This RPS has the underseat wood blocks to keep the pivot bars properly aligned and I am not sure if this restricts the usable height under the seat for a tank.

GreatBayNH posted 01-11-2010 07:07 PM ET (US)     Profile for GreatBayNH    
Product Dimension: 29.25"Lx20.50"Wx12.25"H

What are the dimensions of the space on your Outrage for which you wish to install?

Chuck Tribolet posted 01-11-2010 10:46 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
I was just crawling around my Montauk with a tape measure.

I don't see why it would be necessary to move the hose hole.
Yes, it's about an inch bigger fore and aft than the Pate,
but you just put the front of the tank an inch further forward,
and the back of the tank is in the same place as the back of
the Pate.

Also those dimensions would make it a 31.80 gallon tank,
ignoring stuff like wall thickness, and the various notches,
and that you can't fill it quite all the way. Ah, just
noticed that Jeff pictures show a label that say wall thickness
is 0.2 in. That would make it a 29.75 gallon tank. Anybody
filled one yet?


Raaaaay posted 01-12-2010 01:30 AM ET (US)     Profile for Raaaaay  Send Email to Raaaaay     
My seat is currently in pieces, as such I do not know how much clearance I have under the seat. As I said, this is the style of seat that has the wood blocks under the cushion. I guess I will need to put it back together and take measurements.
The Chesapeake Explorer posted 01-22-2010 11:06 PM ET (US)     Profile for The Chesapeake Explorer  Send Email to The Chesapeake Explorer     
I was excited to see this tank but.... It looks wider front to back then the 12 gal tank I have wider then the old Pate and as has been stated looks like another hole has to be drilled. Sorry I guess Moeller has not quite got it right. They could have put a simple "tunnel" or divot in the middle of the tank for the gas hose to run back to the current tunnel in the boat. If its made "especially" for the classic Montauk Whaler I expect it to drop in.
Salty Paul posted 02-21-2010 01:48 PM ET (US)     Profile for Salty Paul  Send Email to Salty Paul     
I recently acquired a 2008 170 Montauk and want to replace the standard fuel tanks with something larger. Is there an on-deck fuel tank better than the Moeller 24 gallon #031626 as a replacement? Has anyone installed this tank in this model without difficulty? Moeller claims this tank is made for 17 MONTAUK boats.
jimh posted 02-21-2010 02:16 PM ET (US)     Profile for jimh  Send Email to jimh     
[Combined two threads on this same topic.]
contender posted 02-21-2010 05:47 PM ET (US)     Profile for contender  Send Email to contender     
I'm reallly perplexed, I still do not get it, why do so many of you want a plastic tank? I just had a custom aluminum tank built with a manual gauge (electric would have been cheaper) out of .125 thickness and holds 32 gallons of fuel, out the door for $225. I do not have to worry about the sun baking the plastic, or it turning colors, the fittings are brass and will not crack, light weight, and will hold any type of fuel and above all I consider it safer....Oh well to each his own...Be safe
Ridge Runner posted 02-22-2010 04:57 PM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
I put this tank on my 2005 Montauk 170. Fits well, I did not have to move the original fuel line hole.
dscew posted 02-22-2010 07:00 PM ET (US)     Profile for dscew    
Contender, where did you have that tank fabricated, and does it have a tilted/easy access for filling?
contender posted 02-22-2010 07:44 PM ET (US)     Profile for contender  Send Email to contender     
dscew: I live in Ft Lauderdale I had the tank made local with a welder (aluminum) that I use. The statement I was trying to make is instead of going to a marine store and purchase a plastic tank, find a aluminum shop give them the spec, measurements of the tank you would like and have them make it. This is the third custom aluminum tank I have made from them.
My tank is made to my requirements/needs/likes. I can have a gauge (have one or not, electrical or manual), fuel pick up, fuel fill, drain screw(if you want) place anywhere on the tank. The fill can be at an angle, straight up, threaded, or barbed. I can have tabs welded on the tank to be used for a hold down. My tanks specs are 15 inches high, 24 inches wide, 21 inches deep or long. I had a mannual gauge place on the center front of the tank. On the left corner I have a 5/8" vent and 1.5" inch fill place next to each other, My pick up (brass) is on the upper right corner of the tank. The tank is made out of .125 aluminum. My welder has also been contacted by a local whaler dealer (Ft Lauderdale) to make the old whaler (12 gallons and others) tanks.
Here's the address Aim Alloy 3939 SW 12 Ct. Ft Lauderdale Fl. 33312, Phone 954 581 7630, Fax 954 583 7473. The owner's name is Scott. I know he will do a tank for you but the problem is you will lose on the deal because of the shipping, This is why I recommend to find someone local...Good luck
dscew posted 02-22-2010 07:59 PM ET (US)     Profile for dscew    
Damn, I was just in Ft. Lauderdale a few days ago (froze my behind off, but had a great shrimp lunch at Bahia Cabana). I would've loved to see your tank. I'll check into some local aluminum fabricators; thanks.
David Livingstone posted 02-23-2010 04:14 PM ET (US)     Profile for David Livingstone  Send Email to David Livingstone     
Can you see the fuel level through the side of the new white tank?

Thank you,


tbudde posted 03-17-2010 01:28 PM ET (US)     Profile for tbudde  Send Email to tbudde     
Any installed pictures yet? I really want to buy one of these if for nothing more than to get rid of the giant red tank I have now. But I agree with others, I do not want to drill any extra holes if the fuel line does not go through the original opening.
Ridge Runner posted 03-17-2010 01:34 PM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
I'll take a few pictures and post this weekend.
tbudde posted 03-18-2010 09:11 AM ET (US)     Profile for tbudde  Send Email to tbudde     
I want to put this on my 1984 Montauk. I have a Moeller 24 gallon tank now and it has an indent in the center to allow the fuel hose to go through the original tunnel opening. Don't know why they wouldn't incorporate that feature into this tank as well. The reason I like this new tank is it is white (I really dislike the existing red), the filler area looks much better (my existing tank cap is half under the seat), and it looks like the fuel gage in the cap may actually read accurately (I check my fuel level with a stick now because the gage is so bad). Anyway, my existing tank is 19 inches wide, this tank is 20.5 inches wide. Without the indent I think it will be hard to push it far enough forward to utilize the existing tunnel opening for the fuel line. I hope I'm wrong.
ScooterCO posted 03-18-2010 10:08 AM ET (US)     Profile for ScooterCO  Send Email to ScooterCO     
I just installed my new tank this past weekend.
here are some links. My original Pate was rigged with the fule line in front of the tank, so it was easy to install the new Moeller. We aslo installed a new Yamaha 10 micron fuel filter as well. current=Montaukfueltank2.jpg&newest=1 current=Montaukfueltank3.jpg&newest=1 current=Montaukfueltank.jpg&newest=1
Filter current=Montaukfuelfilter.jpg&newest=1

Not sure if I got the links posted correctly or not? Here goes!

ScooterCO posted 03-18-2010 10:12 AM ET (US)     Profile for ScooterCO  Send Email to ScooterCO     
Looks like the links worked but I should have used spell check........... Sorry for the typos.
tbudde posted 03-18-2010 10:30 AM ET (US)     Profile for tbudde  Send Email to tbudde     
Thanks for posting the pics. That is very helpful. I wonder if my existing tank is a Tempo and not a Moeller since it has the indent for the fuel line. I am going to go ahead and order one of these and see how it fits on my '84.
Ridge Runner posted 03-21-2010 05:35 PM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
Here is mine on a Montauk 170; it's a little dark as the pictures where take in the garage.

Ridge Runner posted 03-21-2010 05:39 PM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
ScooterCO - What kind of mat do you have under the tank?
kidishi posted 03-21-2010 06:03 PM ET (US)     Profile for kidishi  Send Email to kidishi     
Those tanks look so much better in white! As for the mat I think it is the factory mat that came with the whalers. Orginally for the two 6gal? Tanks. My whaler has the same mats under a Pate tank I am soon to replace. The inside edges were beveled flat for one large tank .


LabRtvr posted 03-22-2010 08:20 AM ET (US)     Profile for LabRtvr    
I recently installed the new tank on my 2003 170 Montauk. The foot print is actually smaller than the 24 gallon Pate it replaced. Approx 18.75" x 28.75". I was only able to fill with 21.5 gallons of fuel however I am not sure of how level the tank is when its on trailer hooked to my tow vehicle. Unlike the red Moeller tanks, the fuel level cannot be seen through the side of the tank.
ScooterCO posted 03-22-2010 10:58 AM ET (US)     Profile for ScooterCO  Send Email to ScooterCO     
Calab is correct, those mats are the factory mats for the two 6 gal tanks supplied with the boat. The two inside edges were trimmed to make a flat area to set the Pate on to. This was the dealer solution for installing the Pate tank, and the rigging of the fuel line through the floor in front of the tank was also the preferred solution.
Chuck Tribolet posted 05-02-2010 09:52 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
Interestingly, this tank is no longer on the West Marine
web site. Google found it on a scan on April 12, but the
Google link redirects to a 16 gallon tank, and the cached
copy doesn't have much in it.


krbernier posted 05-05-2010 09:47 PM ET (US)     Profile for krbernier  Send Email to krbernier     
Ridgerunner, did you use all of the hold down brackets or just the rear ones. I am installing mine this weekend and I am wondering how to install the front clips. There does not seem to be enough room to get your hands in there.
krbernier posted 05-05-2010 10:29 PM ET (US)     Profile for krbernier  Send Email to krbernier     
Ridgerunner, did you use all of the hold down brackets or just the rear ones. I am installing mine this weekend and I am wondering how to install the front clips. There does not seem to be enough room to get your hands in there.
Sal A posted 05-09-2010 05:33 AM ET (US)     Profile for Sal A  Send Email to Sal A     
I just ordered one. I can't wait.
erik selis posted 05-09-2010 06:49 AM ET (US)     Profile for erik selis  Send Email to erik selis     
I want one too. Looks really nice to me.


Ridge Runner posted 05-09-2010 09:29 AM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
Pretty nice tank, I have installed two of these in Montauk 170’s. One with the permanent hold down brackets, one with the strap kit. Installation of the permanent hold down brackets are a bit tricky, I had to temporarily install the tank with the rear brackets, then remove the tank, remove the RPS, reinstall the tank with rear brackets, setup the location for the front brackets, drill the screw holes, remove the tank, cut a 6" Bomard deck plate in the front of my RPS, reinstall the RPS, reinstall the tank with the rear bracket and bed the screws, then mount the front bracket and bed the screws through the 6” deck plate.
ScooterCO posted 05-17-2010 05:50 PM ET (US)     Profile for ScooterCO  Send Email to ScooterCO     
Update: Just ran approximately 35 gal thru the new fuel system and the new tank is a pleasure to deal with. Easier to fill than the old Pate tank. The fuel level gauge is not as useful as I had hoped. It seems that it reads way on the conservative side. (3/8 available but would only take on 11.5 gal.) The sight gauge did seem to leak a little around the lens when full.
Over all I am pleased as I was with the old Pate but much more user friendly to fill.
george170 posted 05-20-2010 11:44 AM ET (US)     Profile for george170  Send Email to george170     
RidgeRunner, does the cover that goes over the RPS and the console work with the tank installed? I'm interested in getting this tank for my 2004 170 Montauk.
Ridge Runner posted 05-21-2010 11:26 AM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
My RPS cover does not completly cover the back of the RPS. It stops right after opening to the RPS, so this tank works fine with it (the cover does not cover up the tank).
george170 posted 05-21-2010 12:07 PM ET (US)     Profile for george170  Send Email to george170     
Ridgerunner, do you have a picture of the cover on? I don't want it to be to loose and blow off.

Ridge Runner posted 05-21-2010 02:24 PM ET (US)     Profile for Ridge Runner  Send Email to Ridge Runner     
My cover does not cover my tank. ?action=view¤t=DSC_0096.jpg
Chuck Tribolet posted 06-08-2010 12:15 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
My Moeller arrived today. The top of the filler neck sits about 1.5" above
and 3" aft of the Pate (relative to the bottom of the tank,
and relative to the lower center rear wall of the tank,
respectively). Because it sits farther aft, the Moeller is
gonna work. Though I've no idea why it has such a LOOONG
filler neck. The filler neck could easily be an inch or
two shorter.

The Moeller cap sits higher above the top of the filler neck
than the Pate cap, but not a problem.

The Moeller MAY sit on the same mats as the Pate. Time will
tell. I need to get a new seat cushion before I install the

I'm going to need to relocate the attachment points for the
bungies. Oh well.


Sal A posted 06-08-2010 05:28 AM ET (US)     Profile for Sal A  Send Email to Sal A     
I'll take pictures this weekend of my new Moeller; Starboard blocks keep it in place, and provide for over the top bungies as well.
Sal A posted 06-13-2010 10:34 AM ET (US)     Profile for Sal A  Send Email to Sal A     
My new Moeller: jpg taukingheadsaft.jpg

That is my oldest unit flushing out the E-Tec after this morning's paces.

Chuck Tribolet posted 08-16-2010 08:07 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
I installed the Moeller on the Montauk Saturday. It was very

- Pump the existing gas into a couple of jerry cans.
- Remove the old tank.
- Slide new tank into place. It fit on the existing mats.
It's about an inch narrower, but that's not a problem. The
filler is a couple of inches farther after and it will be
easier to fill.
- Steal the elbow off the old tank and install.
- Strap down with the old bungies.
- Fill from jerry cans.


Way way easier than the new steering cable I installed too.


Russ 13 posted 08-16-2010 08:16 PM ET (US)     Profile for Russ 13  Send Email to Russ 13     
Does Moller also offer a 15 or 16 gallon tank?
If so, who would be the best supplier?
jimh posted 08-22-2010 12:10 PM ET (US)     Profile for jimh  Send Email to jimh     
Russ--A good way to find out about the on-deck fuel tanks made by MOELLER is to visit their website. They have a very elaborate page of information on their website that gives all the details about their on-deck fuel tank products. A good way to find vendors who are selling a particular product is to use the option on GOOGLE.COM for "Shopping." This is a very effective way to find on-line sellers, if you want to deal with the on-line sellers, the cost of shipping, the risk of damage in shipping, and other problems that might occur when shipping a large fuel tank.

There is a link to the MOELLER website in the article in the REFERENCE section about ON-DECK FUEL TANKS. Here is the article link:

and here I repeat the link to the MOELLER website page with information about their on-deck fuel tanks which was mentioned in the reference article: topside_tanks/

Finally, here is a link to GOOGLE for a search for vendors of MOELLER fuel tanks that gives over three-thousand results.

Chuck--Thanks for the excellent feedback on the installation of the MOELLER 24-gallon fuel tank on your classic MONTAUK. I see that another purchaser had posted all sorts of anxious thoughts about how the tank was going to fit, but he had not installed it yet. This was several months ago, and we never heard any more from him after all those dire speculations he expressed. Your first-hand feedback on the installation details of this MOELLER tank on a classic MONTAUK are much appreciated, and give us some valuation information.

Russ 13 posted 08-22-2010 09:43 PM ET (US)     Profile for Russ 13  Send Email to Russ 13     
Thanks for all the good information & the links.
They were very helpfull.
Chuck Tribolet posted 08-25-2010 12:41 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
One thing I'm not 100% happy about is that the fuel outlet
must face aft. Even with a street ell in it to run it
down, it still sticks farther behind the seat than I'd like.
I'd prefer that it pointed at about the 2 o'clock position,
and use a straight close nipple and route the line across
the top of the tank.


ScooterCO posted 08-25-2010 10:44 AM ET (US)     Profile for ScooterCO  Send Email to ScooterCO     
Chuck, the fuel outlet is a swivel block allowing the straight hose barb (not included) to be located in any direction you desire.
It is one of the "big" features of this tank! (according to Moeller)
Chuck Tribolet posted 08-26-2010 10:23 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
I put a wrench on it and it didn't want to move.

I'll try again this weekend.


contender posted 08-26-2010 12:56 PM ET (US)     Profile for contender  Send Email to contender     
Chuck: Why do you use bungie's instead of straps? Down here in South Fla. straps outlast bungie's 10 fold due to the weather. Also no sharp ends to worry about (I have a friend who almost lost an eye when a bungee snapped)...
mmakar posted 08-26-2010 01:01 PM ET (US)     Profile for mmakar  Send Email to mmakar     

I installed the tank about six months ago on my 2004 Montauk and have been very happy with it. I too had to reverse the fuel outlet direction and after numerous attempts and a lot of swearing couldn't get it to budge. I ended up calling Moeller because I didn't want to tear it completely off. They said just keep working it and so with a hammer and solid wrench I was finally able to turn it around. I used straps to secure the tank with blocks of starboard under the two ends. It's very solid. Good luck.

Chuck Tribolet posted 08-26-2010 01:18 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
I use bungees because that's what the boat came with and is
setup for. I'm on my third set of bungees in 13 years in
sunny california (and my second set of transom tiedown straps,
so the bungees aren't much worse than straps).


Chuck Tribolet posted 08-28-2010 01:18 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
It moved. Now I gotta get a longer piece of hose so I can
position the bulb with the output side up.

The trick to swiveling the fuel line is to loosen the big
flat nut under it. They you can move the elbow with a big


Chuck Tribolet posted 09-12-2010 11:01 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
Here's a couple of pictures:

Note how I routed the hose across the top of the tank, down
the side, aft, then up through the primer bulb, then back
down. This way the primer bulb is always correctly
oriented. I'll get a better picture of this when I have the
seat out to install a new Hall's Nautical cushion that's
sitting in the garage,

Also note how the filler is completely after of the seat.
The Pate filler was under the seat and a pain to fill.

It's got a gauge, but I still like Pate's window.


Chuck Tribolet posted 09-19-2010 11:16 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
We were out today with a full tank, and while generally
pretty flat, if I got to going too fast, the Moeller had two
habits of note:

1. The gauge in the cap got gas in it when it got bumpy. This
should not be a surprise -- the gauge is open to the tank
below it.

2. It leaked at the cap. Dunno if this is related to #1.
The gasket looks good.


Mumbo Jumbo posted 09-24-2010 01:22 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     
I have the 12 gal on-deck red Moeller tank in my 13 Whaler. When full, the gas sloshes around quite a bit when the boat is trailered, but I've not noticed any leaks from the vented gauge nor from around the cap gasket.
david2000 posted 04-13-2011 08:02 PM ET (US)     Profile for david2000  Send Email to david2000     
I've just received the 24gallon tank and wondering is this adaptor what I needed to connect the existing fuel line to the Moeller tank.

Thanks ahead!

Chuck Tribolet posted 04-13-2011 11:00 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet

That depends on what connector is on your fuel hose. Me, I
like the Nissan ones.

Can you just pull the fitting off your old tank?


ibn posted 05-03-2011 10:26 PM ET (US)     Profile for ibn    
This may be a simple/stupid question. I've never done any boat modifications so go easy on me. :)

I just picked up this tank for my 2004 170 Montauk. I've got an existing 3/8" fuel line for my original Quicksilver tanks. My question is about the connection between the fuel line and PL3 fuel pick-up on the new Moeller tank. I purchased a hose barb that I think should fit in the pick-up and fit my fuel line. When I went to screw in the hose barb I noticed the pick-up has a orange plastic plug in it. I'm not sure if I'm supposed to pop that out, or just cut a hole in the back of it and force the barb to screw in? The plastic plug has no threads in it, but it's stuck in there pretty good.

Here is a shot of the pick-up - - You can see where I tried to screw in the hose barb to the plastic once already.

Thanks for the advice.

Tom W Clark posted 05-03-2011 10:30 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
Ye,s you just pop that orange plug out and the threads will be exposed.
ibn posted 05-03-2011 10:45 PM ET (US)     Profile for ibn    
That did the trick. Of course my hose barb is too small now, oh well, back to westmarine tomorrow.

Anyone have a link on best practices for doing this sort of installation? I'm wondering if I need to coat the hose barb threads with anything before I install it?

Thanks again.

Tom W Clark posted 05-03-2011 11:09 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
Yes, you do. While it is frowned upon to use Teflon thread tape on threaded fuel line fittings, it is still done.

Yesterday I bought a fuel line connector made by Moeller. It was a die-cast Mercury fitting with a brass barb threaded not it. White Teflon thread tape was used at the factory to seal the barb to the fitting.

The barb was the wrong size for my purposes so I removed it and threaded on the correct size barb using a fuel resistant thread dope made by Permatex: PIPE JOINT COMPOUND, #51H.

bonefixr posted 05-29-2011 10:04 PM ET (US)     Profile for bonefixr  Send Email to bonefixr     
I just installed a Moeller 24 to replace the tanks that came with my inherited 1999 Montauk 17.

Photo: Moeller 24-gallon fuel tank installed under Boston Whaler reversible pilot seat

Photo: Moeller 24-gallon fuel tank installed under Boston Whaler reversible pilot seat, forward view

Having read all the threads about having to move the fuel line, I was a bit worried. The tank installed in a jiffy. Removing all the old hardware and what was left of the tray was easy. The old screw holes filled nicely with Bondo type body-filler. An inexpensive neoprene kitchen mat from Home Depot fit the exact foot print of the tank and only needed to be notched at the fuel line portal in the floor. I used the Moeller brackets to secure the tank in place. With the off-set filler cap it fits perfectly under the seat, leaving enough room for the fuel line without any modification and I was able to bolt the seat down properly. Very neat, very easy, very professional.

The brackets are aluminum, the screws #12-1 1/2 inch Stainless. In saltwater this [combination of dissimilar metals] is a battery and will corrode. I used nylon washers to separate them and prevent the battery effect. Anyone have a comment?

Also, the aluminum brackets themselves have rather sharp edges, even after slight sanding with emery. Are there any concerns about friction wearing into the tank itself with the vibration of running? I am considering placing sections cut from report binder cover to edge the bracket against the tank.

This job was much easier than I feared. It should give confidence to anyone contemplating a change. Also, I found the best price at $221 but I don't know if it is proper to cite where I purchased it. I have sent photos to the Moderator to post with this. [Added in-line images to this article--jimh]

Fair winds and following seas.


Mumbo Jumbo posted 05-30-2011 10:57 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     
I bought and installed the Moeller 24 gallon white tank in my 1964 Eastport to replace a fiberglass tank [made by PATE PLASTICS]. I like the design and construction of the Moeller tank but the hold down brackets are unfinished and need bending to work properly. I had to burnish [the hold down brackets] to get rid of the many sharp edges. Once installation was finished, I put 18-gallons in the tank and went for a test ride in a coastal sound with a mild chop. The vented gauge leaked--a lot. This is unacceptable. I don't know what to do next. I'm going to call Moeller customer support. If they cannot provide an acceptable solution, [I] plan to install a non-vented cap and a new vent using a brass fitting screwed into the tank.

I am disapponted with the tank at this point.

Your comment regarding a solution to the leaking problem are welcomed.

-Bill Campbell

Chuck Tribolet posted 05-31-2011 11:25 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
I haven't had any leak problems lately. I think I just
started tightening the cap more.


Sixer posted 05-31-2011 09:19 PM ET (US)     Profile for Sixer    
I have this tank in my Montauk 170. No leaking problems, but the gauge in the cap is off by 1/4-tank. Contacted Moeller via email to see if it could be adjusted; it cannot. Their suggestion was to return it to the place of purchase. IMO, not an acceptable solution. I'm planning to give them a call to talk about the problem.
Tom W Clark posted 05-31-2011 11:48 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
I recently installed one of these brand-new Moeller tanks in a friend's Katama. It is a nice tank and looks great with the white of the early Katama seat and console. There has been no leakage at all.

Two things I did not like about this tank:

--there were quite a few shavings of plastic inside the tank from the final machining of it. It took me a while to remove all of them because of the complex shape of the tank; and

--the fuel cap stands very tall above the top of the tank. This makes it a very tight fit under the seat platform of the early Katama and Minot models. The tank itself clears by inches but that damn cap snags.

Part of the reason it is tall is because they made the fuel gauge integral with the cap. Still, it would have been nice if they could have shaved 1/4-inch to 1/2-inch off of its height.

The one thing I really do like about this tank is the fully swiveling fuel withdrawal fitting. It is free to rotate through 360 degrees with the fuel hose attached. Nice detail.

domlynch posted 06-01-2011 01:57 AM ET (US)     Profile for domlynch    
I too have recently installed the 24-gallon Moeller. I am happy with it except for a small leak through the cap which discolours the white plastic of the tank. It's like a small bleed from the cap down the side of the tank, leading to a yellowish stain on the tank. I only use premuim fuel (with no ethanol). I have found once plastic disclours due to fuel stains it is hard to get off or remedy. [Are there] any sloutions? Tried dishwashing liquid to no real effect. Overall happy with this tank.


Sixer posted 06-07-2011 02:47 PM ET (US)     Profile for Sixer    
I took some time to take a good look at the fuel cap/gauge today. It is as simple as can be, the typical float that rides up a spiral metal band which turns the gauge needle. When positioned at the very top the gauge reads full. With the long filler neck on the tank that will never happen, unless you fill it to the brim. So, realistically for my tank, 3/4's full is as full as I want it.

I'm thinking of buying another cap for $30 and try to adjust the level more accurately by adding a bit more twist to the band, maybe not.

Mumbo Jumbo posted 06-07-2011 07:11 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     
Chuck Tribolet- "I haven't had any leak problems lately. I think I just
started tightening the cap more."

Thanks Chuck, but I tried that. I cranked the cap down and it still leaks as much. If I turn the cap too hard, it pops loose from the threads on the tank filler neck. Guess it is time for me to call Moeller. I just hope that one of their non-vented accessory caps will fit. I can rig a separate vent, with a terminal flash protector fitting, that will run half way up the side of the bench seat. That -along with a non-vented cap- should provide a solution.

Mumbo Jumbo posted 06-10-2011 12:48 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     
I contacted Moeller on Tuesday. After discussing my problem with them, they agreed that my cap was probably defective. I received a temporary replacement cap three days later. This cap, with a manual vent -but no gauge, will serve until my replacement cap with a gauge arrives.

I commend Moeller for their excellent customer service.
Mumbo Jumbo posted 06-10-2011 08:52 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     
I should also mention that the Moeller rep discouraged my "install a new vent in the tank" solution. She said that doing so would void the warranty. Never the less, if the new tank cap with gauge still leaks, I'll put in a separate vent line. That should solve the problem (assuming the tank filler neck is not deformed or uneven).
Sixer posted 06-10-2011 11:15 PM ET (US)     Profile for Sixer    
MJ, does the gauge read accurate for the fuel level?
Chuck Tribolet posted 06-11-2011 04:25 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
Mumbo: I agree with their agent: drilling holes in the tank
voids the warranty. Wait for their replacement cap to show
up and see if that fixes the problem.


Mumbo Jumbo posted 06-12-2011 07:30 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     
Today, I ventured out into Port Royal Sound to test the manually vented cap sent by Moeller . Works like a charm -no leaks -period. I can live without a cap with a gauge for a few days until the replacement cap with a gauge arrives.
Mumbo Jumbo posted 06-12-2011 07:42 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     

I remember correctly, the original gauge was off a bit -but that didn't matter much since I just want an approximation. I keep a full 3 gal. spare tank with a line and bulb for use in the event the bulb goes bad or someone else runs out of fuel while using the big tank.

I'll report on the new gauge after it arrive and is tested.

bboeri posted 06-15-2011 07:42 PM ET (US)     Profile for bboeri  Send Email to bboeri     
Got my new Moeller in today. Cant wait to try it. $189 from Midwest Hunters Supply with $3.00 shipping. Pretty cheap.
dscew posted 06-15-2011 11:07 PM ET (US)     Profile for dscew    
I can't find a Midwest Hunters Supply that has that tank. Do they have a contact?
Sixer posted 06-16-2011 08:12 AM ET (US)     Profile for Sixer    
Mumbo, I spoke with Moeller and they offered to send a replacement cap under warranty. I do not think it will change the result as it is the way the tank and filler neck are constructed and the way the cap reads the fuel level. Great service from them though, very satisfied with their product.
bboeri posted 06-19-2011 11:55 AM ET (US)     Profile for bboeri  Send Email to bboeri     
Ok, so the supplier was Midwest Hunters Outlet. The SKU number is 443562-200. Their website is I just used it for the first time today. Great tank, but a significant problem, the cap. Leaks like a sieve. I tried to crank it down, but it just slips the threads. The problem is caused because the capis not deep enough and cannot "bite" the threads properly. No amount of cranking will help. I will be calling Moeller tomorrow. In the meantime, I took a vented cap off of one of the 9 gallon Tempo tanks that I had been using and it works great. A much deeper cap that can really be tightened. No tank guage on it and a screw type vent, but at least it isnt leaking yet.


dscew posted 06-19-2011 01:27 PM ET (US)     Profile for dscew    
I was just on their site looking for that tank, the SKU doesn't work, nor does a search for Moeller, tank, etc. I'll try to call them this week.
Mumbo Jumbo posted 06-20-2011 09:29 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     

Your problem is identical to mine: cap slipping on threads and leaking profusely. The manually vented cap Moeller supplied performed with no problems. I have not had a chance to try the replacement cap/gauge they also sent to replace the defective original. Must be a bad batch.

contender posted 06-20-2011 10:09 PM ET (US)     Profile for contender  Send Email to contender     
Try placing an large O ring in the top of the cap
Mumbo Jumbo posted 06-21-2011 04:32 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     

Dummy me. I should have tried that. Thanks for the suggestion.

I like the manual vented cap -it is simple and it works. I think I'm going to install a separate vent line. Will have to put in a fitting (will void warranty -don't care) near the existing cap. After that I will close the manual vent and be on my way. Don't really need the fuel gauge since I fill up after every long trip and carry a 3 gal spare tank.

dscew posted 07-21-2011 05:57 PM ET (US)     Profile for dscew    
I just ordered one of these tanks for my Katama with the reversible pilot seat. I was unable to find it on their website, but a phone call to 1-800-518-3808 got it. Great price, $189.00 and $2.99 shipping. They don't have one today but will order from their supplier. Nice customer service, too.
jimh posted 07-21-2011 08:16 PM ET (US)     Profile for jimh  Send Email to jimh     
Who did you order the tank from?
dscew posted 07-21-2011 08:35 PM ET (US)     Profile for dscew    
Whoops, I'm sorry, it was, same site that bboeri ordered from.
dscew posted 08-18-2011 07:41 PM ET (US)     Profile for dscew    
I received the white Moeller tank about a week ago from Midwest Hunter's Outlet. It fits perfectly under the RPS in my 1974 Katama, with plenty of room for the fuel hose to go into the tunnel opening.

I have to say this tank is beautifully made. I have it sitting on a DriDek type of pad, about 1/4" thick, and there is about 1" of room between the top of the tank and the bottom of the seat, exactly enough space to build a pair of custom aluminum brackets to hold the tank from the top instead of drilling holes in the floor to mount hold-down clips.

I'll post a link to pics when I have the install completed.

womms posted 08-29-2011 02:34 PM ET (US)     Profile for womms  Send Email to womms     
Sorry to bring this topic back up again, but I thought others might want to know that Moeller is replacing some iterations of this tank.

I recently bought a tank from West Marine and after the first few uses realized that it was leaking pretty badly. I sent an email to Pam Bryant at Moeller's customer service. She got back to me and said that they have had problems with the treads on some tanks, and that she will be shipping a new tank post-haste. She even told me not to worry about sending in old tank.

Gotta love good customer service.

bboeri posted 08-29-2011 03:34 PM ET (US)     Profile for bboeri  Send Email to bboeri     
Can you give me Pam's email address? I havent had any luck with Moeller on the phone.


womms posted 08-30-2011 01:23 PM ET (US)     Profile for womms  Send Email to womms     

Mumbo Jumbo posted 09-02-2011 10:39 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     
I contacted Moeller in June of this year regarding the leaking cap on my white 24 gallon Topside Moeller tank. I have been using a simple vented cap (the one Moeller quickly sent until they could provide a new cap with a gauge) and have had no problems with leaking –due apparently to me running my Montauk (actually a 1964 Eastport) with the tank less than 3/4 full. When I filled the tank (slightly below the bottom of the fill tube) this past Tuesday, I tried the new cap with a fuel level gauge that Moeller also sent me in June to replace the original cap. The new cap leaked as badly as the cap that came with the tank. I put the vented cap (the one without a gauge) back on, and it leaked as well, and not from the vent screw. When I tighten down the caps in an effort to stop the leaking, they pop (slip) off the threads of the tank.

Currently, my only option is to run the tank with less than 18 gallons of fuel –not really a solution. I have a Moeller Topside Fuel Tank (12-Gallon) on my 13 Whaler that has been problem free.

Today I emailed Mrs. Bryant at Moeller about the continuing problem with my tank. She has been very helpful regarding my past inquiries and I have no doubt that she will quickly resolve this problem. I will update the forum regarding her response.


Mumbo Jumbo posted 09-10-2011 03:46 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     
I got my replacement 24-gallon tank from Moeller yesterday, a week after I contacted them about the continuing leak problem from the original tank. Cannot complain about their customer service; it has been exceptional. The new tank has a different cap and gauge, and the threads on the filler cap are different. The new cap does not slip when it is cranked down. I haven't had time to swap-out the tank but my guess is that the new tank will be just fine. Hats off to Moeller.
contender posted 09-10-2011 04:11 PM ET (US)     Profile for contender  Send Email to contender     
What happens to the old tank? Did they send you labels for return shipping?
Mumbo Jumbo posted 09-10-2011 09:46 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     
Contender- "What happens to the old tank? Did they send you labels for return shipping?"

No. They told me to destroy the old tank -but to keep the fittings in case I had a use for them later.

I'm very pleased with their customer service.


Mumbo Jumbo posted 09-12-2011 07:51 PM ET (US)     Profile for Mumbo Jumbo  Send Email to Mumbo Jumbo     

The new tank has a different cap and gauge, and the threads on the filler cap are different.

Make that "fill tube."

I don't know what they did to the fill tube but the caps no longer jump the threads (slip) when the caps are cranked down. The new cap/gauge is more readable than the old cap. Unlike on the old model cap, on the new cap one can easily see the needle.

divtruk posted 09-15-2011 11:50 PM ET (US)     Profile for divtruk  Send Email to divtruk     
I called Moeller about my leaky cap and they said they would send me a new cap. Imagine my surprise when today UPS delivered a whole new tank.

I can't complain about their customer service.

domlynch posted 09-16-2011 12:19 AM ET (US)     Profile for domlynch    
Unfortunately I too have a bad leak from the cap, bleeding down the tank a couple of inches wide, in a medium/dark brown and on to the floor.

I live in Australia. My brother bought the Moeller on my advice or recommendation as a replacement for the original Pate.

I have used the boat about three times since the tank was new. I deliberatley replaced the original Pate, which had no leaks I could see. Out of those times, first the tank was about 60-percent filled. I noticed a small bleed and leak as noted in my earlier post here. I wasn't too concerned about it, although it's not good.

Then, the last two times, when I filled the tank to about 80-percent, I have noticed what I call a bad leak. I took the cap off, put it on again. I could not stop it. I feel the threads are too fine on the tank, I have had many tanks on other boats in the past, crappy plastic ones which swell up but do not leak like this one, and one excellent stainless one.

It seems to me on the tank I have the thread is far finer than tanks I have had on other boats.

Basically I want one which WORKS, i.e. doesnt leave a several-inch-wide stain down the tank! I dont care who makes it. I want it to work.

I really do dislike complaining and complainers, unless they are genuine, I paid for a new tank which I have a leak and can't seem to stop it. I just want a tank that works, without leaking, under the RPS, as a genuine replcement for the Pate.

Any other suggestions ? As I am in Sydney I might need a custom tank here.

kwik_wurk posted 05-04-2012 07:55 PM ET (US)     Profile for kwik_wurk  Send Email to kwik_wurk     
At the Moeller website this tank [i.e. the one being discussed in this discussion] is now listed as [having a capacity of] 22-gallons. I don't know why, but maybe the neck doesn't allow for a full fill.
jimh posted 05-04-2012 09:37 PM ET (US)     Profile for jimh  Send Email to jimh     
Please give the URL of the resource you are referring to when you say, "At the Moeller website..."
Chuck Tribolet posted 05-05-2012 01:14 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
[Perhaps intends to point to] topside_tanks/--scroll down a bit.
jimh posted 05-05-2012 04:17 AM ET (US)     Profile for jimh  Send Email to jimh     
On the Moeller website (see link above) the section describing the "22-gallon" tank includes this image: 031626_24_gal_bostonwhaler_216.jpg

Note the name of the graphic image:


skinnywater posted 05-09-2012 02:22 PM ET (US)     Profile for skinnywater    
There's the confusion - it was designed for a 24 gallon Boston Whaler... no wonder! So now we know. ^@^( )~
KismetLRC posted 08-13-2012 01:13 AM ET (US)     Profile for KismetLRC  Send Email to KismetLRC     
I just ordered one of these for my Montauk 17. Found three of them on Amazon for $229 with free shipping. Seemed to be a pretty good deal compared to other shops.

[Changed topic and began to discuss the restoration of this boat. This is a great topic, but please start a new thread for it. Thank you--jimh]

Thanks again for a great site! I've learned a ton here over the last couple of days.

GAwhale posted 07-17-2014 07:52 PM ET (US)     Profile for GAwhale  Send Email to GAwhale     
I am contemplating buying a new Moeller fuel tank for my Montauk. It is quite confusing.

I have found them on E-Bay , Amazon, and Northern. It looks like the cheapest one is Northern: $219.99 plus $20.99 for shipping. It is on back order right now.

The part number for Northern is 031526 for a red tank.

I assume the part number 031626 is the white tank.

Is my assumption correct? Is there any difference between the two other than the color?

Many Thanks

jimh posted 07-19-2014 03:10 PM ET (US)     Profile for jimh  Send Email to jimh     
I recommend you use the Moeller website to verify the Moeller part numbers for Moeller fuel tanks. The Moeller website page for on-deck fuel tanks is: topside_tanks_noul/

As far as I can tell, that web site and that web page is authoritative for Moeller part numbers.

GAwhale posted 07-23-2014 07:26 PM ET (US)     Profile for GAwhale  Send Email to GAwhale     
Jim--thank you for the helpful information. Heather from Moeller Marine nice enough to call me back and leave a message. She said 031626 is white. When Moeller added the barrier material (not quite sure what that is) it was causing a discoloration to the white so they had to create those with red 031626BR

[Began sidebar topic about another fuel tank. Please start a new thread to begin a discussion on other fuel tanks. This thread has been going for several years and is only discussing the new Moeller on-deck fuel tank designed for Boston Whaler boats. Thanks. --jimh]

erg153 posted 07-30-2014 12:25 PM ET (US)     Profile for erg153  Send Email to erg153     
The only think I do not like about my Moeller is the fact that the fuel level indicator integrated in to the cap never shows full. When I fill the tank up to the recommended level, the float rises and reads out between 5/8 and 3/4 full. Never full though. I wish there was a way to calibrate the float so that when the tank is full the float reads full.
Chuck Tribolet posted 07-30-2014 05:46 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
You can calibrate the Moeller gauge. I think I posted it here
a while back. It involves putting more (or less) twist in
the "screw". I did it to mine.


jimh posted 07-31-2014 01:25 AM ET (US)     Profile for jimh  Send Email to jimh     
I don't know what the person from Moeller meant when they described the "barrier material." Maybe it has to do with the more stringent regulations about fuel vapor permeability in gasoline fuel tanks.
jimh posted 07-31-2014 02:58 PM ET (US)     Profile for jimh  Send Email to jimh     
I notice on the Moeller website some of the fuel tanks have this additional notation in their listing of features:

New EPA evaporative emissions standards in place for 2012 require all topside tanks being installed in boats built after 2011 to comply with the new low permeation guidelines.

We've added our new "roto mold" barrier technology to the Low Perm certified topside tank options to meet these new requirements. This new low perm technology is being used today by the marine industry's leading boat builders for their 2012 models and complies fully with the new EPA evaporative emissions requirements.

Our new Low Perm certified tank options include Moeller's new EPA compliant self-venting fuel cap (Moeller No. 305994-10) and a new fuel sender with visual site gauge. Add our optional electric capsule (part No. 035760-10) to the sight gauge and you can direct connect to a fuel gauge on your dash.

The inference I make from this is that the phrase "barrier material" most likely refers to the same feature called "new 'roto mold' barrier technology" in the above. Since this feature is associated with "Low Perm", which I also infer means low permeability, I think my earlier conjecture is probably affirmed. The phrases "barrier material" or "new 'roto mold' barrier technology" refer to some change in the manner of making the molded plastic on-deck fuel tank in order to make it compliant with the EPA evaporative emission requirements which came into effect c.2012.

Note that the white tank was first introduced in c.2009, which is before the evaporative emission requirements of c.2012.

The images shown on the Moeller fuel tank web page sometimes do not match the corresponding descriptions. Moeller's web pages have an image of a red fuel tank, but describe it as a white fuel tank for model 30162BR. Exactly how to resolve this conflict is unknown to me.

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