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Old 12-16-2008, 11:38 PM   #48 (permalink)
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Quote:
Originally Posted by Nevyn View Post
Sounds rather similar to the folks that swear by the theory that acetone in proper quantity provides MASSIVE fuel economy + performance boost. supposedly, it lowers the surface tension of the gasoline, thus making it easier to burn as it's less likely to "droplet."
There are similar claims with Xylene and Toluene... both of which have octane levels of race fuel. (117 and 114, respectively).

I've personally added 1 gallon of Xylol to my 87 octane fuel mixture, so by simple averaging:

87 octane x 11 gallons = 957
117 octane x 1 gallon = 117

957 +117 = 1074

1074/12 gallons = 89.5 average octane rating.

The effect was like using mid-grade gas in my car. I got no better or worse fuel mileage. I did notice that it cleaned the intake runners in the head of gook though, when I changed the intake manifold.

I never had a chance to try 2 gallons, which would have given me

87 x 10 = 870
117 x 2 = 234

1104/12 = 92 octane.

I contend without experiment that it would have done nothing, however, for fuel economy, as higher octane fuel does nothing unless you tune for it.

Test Vehicle was a 1989 Honda Civic DX, 1.5 liter, "new" engine (20-30,000 miles) average driving method (3k shift, 70-75 MPH highway@3200-3800 RPM 5th gear), average spring/summer weather, average trip length = 28 miles or so (closest store is 10, work was 35 one way, "everything" was 20 or so.)

Before anyone attempts to flame the use of explosive solvents in your fuel - Gasoline contains Xylol and Toluene already. Adding more won't screw up your engine, and is only dangerous if not handled correctly.
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