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xk120 said:
here are some common ways to boost your octane using off the shelf products.

Formula #1 - toluene
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 toluene. 12-16 ounces will only raise octane 2-3 *points*, ie. From 92 to 92.3. Usually mixed with toluene 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 ontent than toluene 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", combine 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.


Sample mixture = techron ;)

to make your own octane booster, it is easiest to make up a large batch, and then bottle it up in "dosage-size" uses. Below 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 toluene 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.
~~note:i am not responsible for any harm that may come from working with dangerous chemicals or the improper mixture of said chemicals~~
 

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Since in NJ you arent allowed to pump your own gas I sometimes get an idiot that fills my tank with 87 octane so I then go to autozone and put in 2 bottles of lucas octane booster. From what the first post reads my gas tank is not even getting up to 88 octane after those 2 bottles.

So you just got gas and filled up with 87 octane. What do you do? Will adding 1 of the 16oz bottles of the formula you put together boost octane up a full 6 points to 93?

Hollywood mentions Xylene working best and being available at paint supply stores which are all over my town. Can you use 100oz of that with the 25oz of mineral spirits and 3oz transmission fluid?
 

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100 oz of toluene for octane boost
25 oz of mineral spirits (cleaning agent)
3 oz of transmission fluid (lubricating agent)
SERIOUS octane degrader there. The 100oz of Toluene would be a nickel of good while the tranny fluid would be a sawbuck of bad.
 
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