Fuel Treatment - Mercury Pro XS

[hvychev77]

Hi folks, I'm running a Mercury Pro XS 150hp on my war eagle, just curious what kind of fuel treatment everyone is running? Especially to other Mercury owners, which is the best and why? Thanks in advance! Cheers!

[Kevin22]

I use seafoam and quickleen injector/fuel system cleaner

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[Tom 513]

I use seafoam and quickleen injector/fuel system cleaner

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For what its worth, Ive always been a fan of Seafoam, but a friend of mine bought a new Targa Tracker with a 150 Merc pro, the Tracker mechanic said DO NOT USE SEAFOAM, but with my experiances with Tracker mechanics I dont take much faith in what they say.

[Kevin22]

For what its worth, Ive always been a fan of Seafoam, but a friend of mine bought a new Targa Tracker with a 150 Merc pro, the Tracker mechanic said DO NOT USE SEAFOAM, but with my experiances with Tracker mechanics I dont take much faith in what they say.

My dealer salesman/owner told me to use mercury products when i asked (was my first 4s), and said to not use seafoam. While talking to the mechanic in the back about a few rigging things i wanted done, i asked him the same question and he said merc only recommends mercury/quicksilver products. I said "what do YOU suggest" and he said "i use seafoam in all of my boats". That kinda told me what i suspected, that mercury tells their dealers/techs to only recommend merc additives.

I had my motor in for servicing two years ago at a different shop (merc certified) and i first told them I use seafoam to keep the engine clean because i burn a tank a year in our idle only lakes, and asked if there was anything else i should use. He walked me over to his desk and showed me all kinds of info on the Mercury products, told me none would interfere/react with seafoam, and suggested the quikleen because all the idling and older gas can cause some buildup in the fuel system/injectors and seafoam isnt the best at that sort of stuff, only combustion related carbon.

He also suggested the stabilizer but i really havent ever had issues with our non eth gas lasting the season.

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[Lund]

I have a Yamaha and use Sta-Bil 360 Marine. It is designed to prevent fuel-related damage in marine engines. It can protect against corrosion caused by unleaded fuel, including ethanol blended fuels, and can also clean the fuel system for improved performance. Stabil Marine has extra ability to neutralize the water that ethanol attracts. Also stabilizes fuel for 12 months. Ran it for decades and no issues.


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[keeferfish]

ability to neutralize the water that ethanol attracts.

Best thing you can do IMO is not to use ethanol fuel. Easy to find stations that have non-ethanol fuel, link below.

Pure-gas.org - ethanol-free gasoline in the U.S. and Canada

[Lund]

Best thing you can do IMO is not to use ethanol fuel. Easy to find stations that have non-ethanol fuel, link below.

Pure-gas.org - ethanol-free gasoline in the U.S. and Canada

Thanks! I agree that ethanol free is probably best and I used to get it when I could. But it is not convenient to get near me at all. So I get it when I can but still run Sta-Bil. Fuel doesn’t stay long in my tank anyways as I run it all year ha


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[CrappiePappy]

Previously I've gone back & forth between Stabil & Seafoam, but in the past several years I've only used Seafoam. 1999 90HP Merc 2strk ... fuel has been in my tank for about a year and I do not expect any problems (relating to fuel), as I haven't had any over the past several years.

Can't tell you which is the best, but I'm one of those "if it ain't broke, don't fix it" kinda guys.

[RVG Fishing]

I use Seafoam Marine Pro.

[Curlytail]

I own a Mercury 4 stroke & I use the Mercury brand fuel treatment. Works for me.

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