fuel stability

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toptiger
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fuel stability

Unread post by toptiger » December 6th, 2007, 10:19 pm

as i leave my m151 for a few months at a time, and had some carb issues recently, I began to wonder if the new fuel blends being pushed on us {some having 30% PLUS ALCOHOL} are stable for this kind of storage- someone recommended using aviation fuel, sure it's more expensive but readily available {airboats} here for apx 4.50 a gallon. I have an airplane which I also leave for months and I never have had a problem.
so is aviation fuel a good thing to consider? I only drive a few miles around town every day when I am here so the extra expense isn't really a factor.
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raymond
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Unread post by raymond » December 6th, 2007, 11:11 pm

Toptiger

I grew up and am still involved in the fuel business. Any fuel sold in the U.S. that has more than 10 percent alcohol has to be labeled so at the pump. Try some Sta-bil brand fuel stabilizer in your fuel. That is what most boat owners use when putting their boat away for the winter. Make sure you run it for a few minutes after adding the stabilizer so it gets in the carb. Also make sure your fuel tank is full and it will keep condensation in the tank down. Also do you have a good aftermarket fuel filter just before the carb :?:
Raymond


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rickf
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Unread post by rickf » December 7th, 2007, 10:45 am

Hey top, Stay away from the high alky content. You will wipe out you pump and accelerator pump not to mention the fuel lines. Plus these things run so lean as it is you will have to drill the main jet to run good on 30% alky.
Rick
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
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JAMES HYBICKI
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dam gas

Unread post by JAMES HYBICKI » December 10th, 2007, 8:33 pm

Even with the use of consumer added gas stabalizers, the current fuel with the 10% ethanol addative will only have a shelf life of 60 days before you will see significant stratification of the fluids and loss of combustability causing what will seem to be carb problems but are actually fuel problems.

I keep a small amount of fuel in the tank and add some during the winter months when the beast does not get used much, but I also regularly run the vehicle to try to reduce the fuel problems and add some gas every couple of months (usually when getting more gas for the snow blower).

I have not has carb problems with the mutt vehicles, but have had fuel issues. I has always gone back to the fuel!!!

Hybicki
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