yeah toluene is good stuff, has somewhere around 116 octane, and it has a lot of HydroCarbons, so your milage will jump up to around 30mpg in the city and 35-38mpg highway.

California makes it hard to get due to the crackheads use it for making meth. it also very expensive here, use to be cheap 4 years ago.

I think VIP fuel has a 103 race gas, with more pop than toluene but cost about $80 for the metal can, hardly worth the money .