Quote Originally Posted by AlliRae
you can also make a leaded 100 octance fuel by putting regular in it and adding 1 oz or about a capful of rubbing alchohol per gallon.



Quote Originally Posted by southside
I've heard of some stuff they sell at home depot you can mix to make race gas.But I have never heard of mixing rubbing alchol.
Thats probably Toulene: AKI (R+M)/2 = 114

A 10% mix will boost your octane by 3 points for 87 and 2 points for 93.
Remember that straight toulene does not have detergents. Though.