You'll be surprised to learn their point system does not raise
octane levels as you may think, when they advertise a 2.0
octane increase they really mean from 93.0 to 93.2. You gotta buy
it by the case to make a noticeable diference.
A chemist with the state weights and measures department explained the best way to increase octane is to mix 2 gal.
toluene with 8 gal. of 93 octane gas, one gal. of toluene is 117 octane. I believe this will raise 93 to something like 98-100.
The
oil compaines use toluene to raise their octane levels.