Gasoline Additives - Acetone - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 33 Old 05-14-2008, 11:15 AM Thread Starter
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Gasoline Additives - Acetone

It has been suggested that adding a small amount of acetone (2-3 oz) to your gas tank can add 10% - 35% to your fuel mileage and clean the carbon deposits in an engine.

This works because acetone is a surfactant for gasoline - acetone reduces the surface tension of gasoline rather dramatically, allowing the droplets to evaporate more quickly and burn more completely. This means better fuel mileage and less pollution. In fact many mechanics for years have used acetone to improve an old engine's pollution performance and get the engine to pass a smog test.

Anyone here use acetone?
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post #2 of 33 Old 05-14-2008, 11:21 AM
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I dunno . . . seems like it might have unintended effects on the hardware in the fuel system. Rubber hoses, for example.

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post #3 of 33 Old 05-14-2008, 11:32 AM Thread Starter
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This is usually not a problem with OEM fuel lines, as the OEM fuel lines are made to handle solvents like this. Gasoline in the US is about 25% aromatics, meaning Benzene, Toluene, and Xylene. These are pretty strong solvents too.
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post #4 of 33 Old 05-14-2008, 11:58 AM
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I'm sure you're aware of the possiblity of fuel component damage, due to acetone attacking plastic, right? I would go through a thorough check of the fuel system to see what is vulnerable before trying this.
EDIT: I see I've come late to this point.
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post #5 of 33 Old 05-14-2008, 12:03 PM Thread Starter
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Acetone is about as mild a solvent as you can find. Try dissolving fingernail polish with gas and see what you get. Gas contains large amounts of toluene, which is used as a plastic solvent, and gas (particularly the high-test stuff with "detergent" additives) contains levels of extremely powerful solvents to help remove built up varnish and carbon deposits on engines.

The stuff in gas is far worse than acetone, and the fuel system has to be designed to handle it. Pull an MSDS and query some of the compounds to see what I'm talking about -- high test gas is up to 50% "gas" hydrocarbons (C3-C12), as well as toluene and xylene (up to nearly 50%, but maybe much lower depending on the blend) to boost octane.

Then there are trace amounts (under 1% each) of 1,2,4-trimethyl benzene, styrene, benzene, ethyl benzene, hexane, cyclohexane, napthalene, MTBE, ETBE, TAME, and DIPE. Even from the same brand, the amount of the above compounds in gas from the pump can differ wildly.
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post #6 of 33 Old 05-14-2008, 01:13 PM
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Techron by Chevron cleans your FI system and gives 10% or so mileage improvement IF your FI system was really dirty to begin with.

Toss some acetone in your tank and let us know how it goes.

Go hakafugu yourself.
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post #7 of 33 Old 05-14-2008, 02:39 PM
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I could only see this making much of a difference if an engine's fuel delivery system, whether carbs or FI, was doing a very poor job of atomizing fuel in the first place. In this day and age, they certainly don't leave the factory in that sort of condition - EPA regs wouldn't allow it, and CARB regs (not to mention general performance and drivability concerns) would argue against it.

With a well-used fuel system, however, it is possible that the engine could be passing a lot of unburned hydrocarbons due to insufficient atomizing of the fuel in the intake, I suppose.
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post #8 of 33 Old 05-14-2008, 03:03 PM
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Quote:
Anyone here use acetone?
Not me. Nor would I.

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post #9 of 33 Old 05-14-2008, 03:37 PM
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I heard about this a couple years ago and tried it in my cage and my bike over a space of several tanks each to virtually no effect.

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post #10 of 33 Old 05-14-2008, 10:41 PM
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Just for kicks tried it on the Wee had no effect either positive or negative. Ran acetone in enough tanks to use a quart of acetone. Riding style made the most difference in mpg. Putting a 16T front sprocket put me up over 60mpg with a stock bike.

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