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Most of the fuel additives like Octane Boosters have no effect.
They really don't add much octane to your fuel. If you read the label it talks about raising octane by points. After researching 3 different companies, the resul was that they are playing a marketing gimmick. A point is 0.1 not 1.0. So most octane boosters will add about 1 octane point to your gas. If you don't believe me, call them.

This also passes the "reality test". Tolulene is 112 octane. (you can't just add toluene) So if you put 1 gallon of pure tolulene in a 20 gallon tank of 93 octane gas, you have 112*1/20+93*19/20 or a total octane of 93.95, or 1 real octane point.

How can a quart give you more? Xyelene is 119 octane, so 1 gallon of this to a 20 gallon tank is 94.3 octane. Even if the tank size was 1/2 or 10 gallons, tolulene gives a 2 point increase and xyelene gives a 2.5 point increase. Now you can see why people make their own octane booster. Tolulene and Xyelene and petro based products.

Well the whole point is that you can make your own octane booster a lot cheaper.

Jerry
 
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