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skred posted 06-02-2004 08:29 AM ET (US)   Profile for skred   Send Email to skred  
My dealer suggested that I should run Mercury® QUICKLEEN™ ENGINE TREATMENT (I think that's the name) with my gas on my carburetor 4-stroke engines. I haven't seen this product discussed here, and wonder exactly what it does. The instructions say something like "1 oz. per 6 gallons" ... Could it be just another carburetor cleaner?
bigjohn1 posted 06-02-2004 08:45 AM ET (US)     Profile for bigjohn1    
skred, you got it buddy..its just another cleaner and as you probably already know, they're a dime a dozen. That is not to imply the product does not work but lets face it, the dealer is also trying a practice a little legal commerce by pushing products he represents. If it were me, I'd run the best gas (highest octane) my wallet would allow and ocasionally run that product (or any one of hundreds of others that just as good) whenever you had it. Come to think of it, STP gas treatment is cheaper and is a quality carb/injector cleaner that has been on the market for YEARS.
Big John
skred posted 06-02-2004 08:51 AM ET (US)     Profile for skred  Send Email to skred     
Thanks for the observation. I found an old thread that said Mercury had a service bulletin out saying to use this product regularly with their Optimax engines. It apparently has some de-carbonizing abilities. I figure to add it to my first tank (45 gal) on my Dauntless, and perhaps do the same every other season, depending on how many hours I put on the engine. I certainly can't hurt.
Moe posted 06-02-2004 10:48 AM ET (US)     Profile for Moe  Send Email to Moe     
If you're going to add anything to your gas, I'd use Chevron's Techron.

seasicknes posted 06-02-2004 12:55 PM ET (US)     Profile for seasicknes    
Did you noticed that Mercury® QUICKLEEN™ ENGINE TREATMENT is all synthenic.
In which makes it more expensive.
At west marine this product cost 10 bucks. where as if you buy the other stuff its like 3 bucks.


Barry posted 06-02-2004 05:15 PM ET (US)     Profile for Barry  Send Email to Barry     
A 12 oz bottle of Mercury® QUICKLEEN™ ENGINE TREATMENT treats 72 gallons of fuel.
bigjohn1 posted 06-03-2004 05:23 AM ET (US)     Profile for bigjohn1    
Moe's correct....Chevron's Techron is good stuff as well. But lets look a bit "deeper" and back some of this stuff up. I noticed when rebuilding various engines over the years that it was usually easy to tell when only cheap gas (the cheapest, low octane at the pump) was run as the carbs, intake manifold, and piston tops usually told the story. They'd be dirty as hell with carbon, varnish, and other deposits. In truth though, many other factors aside from gas could cause this as well.....timing, carb adjustment, driving habits, etc.

I did rebuild a few motorcycle/car performance engines that had been regularly "treated" with quality gas additives and I must say they tended not to have all the gunk on them. It can't hurt and for the relatively cheap price for many of these additives, it only makes sense in my humble opinion.
Big John

jimh posted 06-03-2004 09:37 PM ET (US)     Profile for jimh  Send Email to jimh     
The name of the product:

Mercury Precision Care
Engine Treatment QUICKLEEN™

With rust inhibitor for 2-cycle and 4-cycle marine engines


Marine Grade Product

--specially formulated for gasoline used in 2-cycle and 4-cycle marine engines.

--Mercury® Quickleen Engine Treatment is three performance enhancing treatments in one:

----Detergent to clean combustion chamber deposits
----Dispersant to prevent formulation of future deposits.
----Rust inhibitor to prevent corrosion of internal ferrous metal surfaces.

---- Add one ounce of Quickleen™ per six gallons of gasoline at each tank fill throughout the boating season.

----See your engine service and maintenance manual for specific applications and maintenance schedules.

--Keep your engine running longer and stronger with Mercury® Precision Parts.

Part no. 92-802877A 1

jimh posted 06-03-2004 09:52 PM ET (US)     Profile for jimh  Send Email to jimh     
[Changed spelling to proper form in a number of places.]

I think there is another product, something similar, which you can use to help clean out an engine, rather than running it all the time. We ran something through the engines while in British Columbia. As we were going through several hundred gallons of gasoline on the trip, it seemed like a good time to add a little something extra to a tank or two in the process. Or perhaps we just ran the QUICKLEEN at a higher concentration. I don't recall.

I just bought a 12-ounce bottle at the Mercury dealer for $7.

kglinz posted 06-03-2004 10:22 PM ET (US)     Profile for kglinz  Send Email to kglinz     
I've noticed that the Parts people and the Owners Manual writers almost never seem to get it together. My owners manual indicates a preference for "mid range gasoline which contains fuel injector cleaner" but there is no mention of any Mercury carbon cleaner. A bottle that treats 72 gallons isn't to bad, but a lot of fuels already have cleaner added.
skred posted 06-04-2004 01:05 PM ET (US)     Profile for skred  Send Email to skred     
Thanks for all the clarification. Considering it will cost me about $3.50 per season ($7.00 max) I think it's just good proactive policy to use the stuff. My engine has no problems presently, and this will probably help prevent future ones.
I often marvel at - for example - my uncle's 1960's Evinrude 10 hp that he used heavily every spring, summer and fall. He mixed OEM oil with the gas, and fogged the motor every Fall. That motor still runs like new today, and had 1 water pump replaced in all that time. No special additives, enhancers, solvents, etc. Wonder what magic powers he had....
Perry posted 06-04-2004 01:39 PM ET (US)     Profile for Perry  Send Email to Perry     
I use SeaFoam in my car, truck and motorcycle with great results and was wondering if it is similar to QUICKLEEN™.
LHG posted 06-04-2004 07:34 PM ET (US)     Profile for LHG    
Mercury's QUICKLEEN is an excellent product, and highly recommended. Yamaha makes an identical product. I have used it, as recommended by a Mercury mechanic that I trust, who has seen the insides of hundreds of engines, and it's primary purpose is to remove carbon deposits, the great killer of two stroke engines. He says engines where QUICKLEEN has been run are like new inside. ONe of it's active ingredients is Techron I believe. It is not a carb/fuel injector cleaner. This is also incorporated into Mercury's two stroke oils, which is where the TCW-3 designation comes from, as engines using earlier oils suffered destructive carbon build-up.

I have seen how it works on my own engines, keeping the engine combustion chambers and pistons exceptionally carbon free and clean. I don't know about 4-strokes, but if you have a 2-stroke or DFI, you should be using this stuff. A lot of these additives are worthless, but this one is not.

I have been told to use it every 4th tank of gas

AKwalor posted 06-05-2004 01:12 AM ET (US)     Profile for AKwalor  Send Email to AKwalor     
does anyone happen to know the name of the yamaha stuff, and is it any different?
gss036 posted 06-05-2004 01:47 AM ET (US)     Profile for gss036  Send Email to gss036     
I don't know the name of the Yamaha product, but I do use a lot of SeaFoam and lots of people swear by it. It has been around for many years.
jimh posted 06-05-2004 08:43 AM ET (US)     Profile for jimh  Send Email to jimh     
The mention of "Sea Foam" sent me on a GOOGLE Search. I found their home page. Their frequent mention of "50 years" causes one to infer the product has been available for some time.

The Material Safety Data Sheet shows the product is primarily "pale oil" and naptha. Curiously, the same document is used for several of their products.

A search for "pale oil" turned up mainly mentions of Cod Liver Oil. Numerous other boating web sites seem to mention the product. The product is made in Minnesota, so it can't be all bad.

macfam posted 06-05-2004 08:48 AM ET (US)     Profile for macfam  Send Email to macfam     
The name of the Yamaha product is "Ring-Free".
I believe the maintenance dose is 1 oz. per 15 gallons of fuel. There is also a higher dosage on the label, if your having problems.
I have always used it, along with Yarmalube in my Yamaha 250 OX66.
I trust it's working....never had a problem.

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