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Author Topic:   Fuel Capacity for 15' w/new 50 HP 2 stroke
peter ortisi posted 05-15-2002 03:49 PM ET (US)   Profile for peter ortisi   Send Email to peter ortisi  
I am contemplating installing an 11 gallon
fuel tank inside my center console. I am trying to get a rough idea if this is a
reasonable amount of fuel.
jstachowiak posted 05-15-2002 09:24 PM ET (US)     Profile for jstachowiak  Send Email to jstachowiak     
I have a 15 GLS with a 12 gallon tank and a 40 HP Johnson. I cruise all over and only have to fill up every couple of months. Spent a week in Islamorada, Keys and didn't even have to fill up once. So, 11 gallons is OK, I think.
mudpuppy posted 05-16-2002 09:54 AM ET (US)     Profile for mudpuppy  Send Email to mudpuppy     
Wow-you only fill up an 11 gal tank every few months? A week in the Keys without a fillup?

Do I have a major problem with my boat?

I have a 15'/60 hp Merc (1987) and a 4 hp Johnson--both 2 strokes--with a 17.5 gal main tank, and a 3 gal reserve for the kicker. We use about 5 or 6 gals every time we go out fishing with 2 guys, a labrador, two batteries, and downriggers with weights. We're gone for the whole day, about 10 hrs, and troll, usually splitting the engine use between the 60 Merc and the 4 hp Johnson kicker. I guess we cover about 30 miles or less each time we go out.

Is this abnormal fuel usage?

where2 posted 05-16-2002 12:22 PM ET (US)     Profile for where2  Send Email to where2     
I would suspect 11gal is reasonable. I usually get between 4gph and 5 gph for typical cruising on my 15' Sport with 70Hp OMC. I have two 6gal tanks and can go skiing for the better part of a day on 6gal. One reason I like the two 6gal cans is because I know when I swap tanks, I'm on reserve. Last time I went for a 30 mile trip, I was still running on the first 6gal tank. Then again, I didn't have the extra person, labrador, extra battery, downrigger, weights and poles.
jkh posted 05-16-2002 08:45 PM ET (US)     Profile for jkh  Send Email to jkh     
I have a 15' GLS with 70hp Yamaha and a 12 gallon tank and have trolled all day with no problem. I would think with a 50hp you would be fine.

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