Octane Booster Fuel Additive
I can tell you that pump gasonline is comprised of 75% toluene and other 0 octane filler/lubricants. One little bottle of Octane Booster is comprised of 10 fl.oz of toluene/xylene and marvel mystery oil.....and they charge nearly 10 bucks for 1 dose!!!
Xylene is not used in gasoline but has nearly the same chemical makeup and is rated at 118ish octane straight out of the can/jug.
Sherwin Williams, Wal-Mart, Lowes, Home Depot, and other paint retailers have this stuff by the 1 and 5 gallon jug.
My ole 2.0L turbocharged Eclipse AWD loved 80% toluene/20% 91 octane.....and never gave me a single problem at 30 Psi =P~. I was running 1 stage colder plugs though too...
Here is the exact stuff:
and a pic of my plugs after numerous 30 psi pulls: