Octane Booster
I have looked into it a little bit but it's hard to find around here. I have heard acetone will do the same but cost is the main issue I have found with both. I can't remember the ratios but seems like I figured it was about as cheap to go with race fuel. Torco seems to be the choice of the unleaded racers. I think they have fuel and additives. I can't comment though cuz I have never used it.
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i have used both. mostly in a half to 1 gallon thinner to 5 or so gallons of gas. you have to be carefull becouse if you use too much it will eat the rubber and plastic out of the fuel system.
its smells like your painting a house when it gets burned
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Toulene
R+M/2...114
Cost...$2.50/gal
Mixtures with 92 Octane Premium
10%...94.2 Octane
20%...96.4 Octane
30%...98.6 Octane
Notes: Common ingredient in Octane Boosters in a can.
12-16 ounces will only raise octane 2-3 *points*,
I.e. from 92 to 92.3. Often costs $3-5 for 12-16 ounces,
when it can be purchased for less than $3/gal at
chemical supply houses or paint stores.
FORMULA 2
Xylene
R+M/2...117
Cost...$2.75/gal
Mixtures with 92 Octane Premium
10%...94.5 Octane
20%...97.0 Octane
30%...99.5 Octane
Notes: Similar to Toulene. 12-16 ounces will only raise
octane 2-3 *points*, I.e. from 92 to 92.3. Usually mixed
with Toulene and advertised as *race formula*.
FORMULA 3
Methyl-tertiary-butyl-ether (MTBE)
R+M/2...118
Cost...$3.50/gal
Mixtures with 92 Octane Premium
10%...94.6 Octane
20%...97.2 Octane
30%...99.8 Octane
Notes: Oxygenate. Very common in octane booster products.
Has lower BTU content than toulene or xylene, but oxygenate
effect makes the gasoline burn better and produce more energy.
FORMULA 4
Methanol or Ethanol
R+M/2...101
Cost...$0.60 - $1.75/gal
Mixtures with 92 Octane Premium
10%...94.3 Octane (Methanol)
10%...94.7 Octane (Ethanol)
20%...Not Recommended
Notes: Methanol is wood alcohol. Ethanol is grain alcohol and found
in Gasohol in 10% ratios. Both alcohols are mildly corrosive
and will eat gas tank linings, rubber and aluminum if used in
excessive ratios. Main ingredient in "Gas Dryers", combines
with water.
FORMULA 5
Isopropyl Alcohol and Tertiary Butyl Alcohol
R+M/2...101
Cost...$0.60-$1.50/gal
Mixtures with 92 Octane Premium
10%...94.5 Octane
20%...Not Recommended
30%...Not Recommended
Notes: Similar to Methanol/Ethanol. Isopropyl Alcohol is simply
rubbing alcohol.
MAKE YOUR OWN OCTANE BOOST
How to make your own octane booster (this is the basic formula of
one of the popular octane booster products). To make eight 16 ounce
bottles (128 oz = 1 gal):
100 oz of toulene for octane boost
25 oz of mineral spirits (cleaning agent)
3 oz of transmission fluid (lubricating agent)
This product is advertised as "octane booster with cleaning agent
*and* lubricating agent!". Diesel fuel or kerosene can be substituted
for mineral spirits and light turbine oil can be substituted for
transmission fluid. Color can be added with petroleum dyes.






