Many use plain acetone in the gas, and take in consideration that there are aromatics in the gasoline anyway.
I tried a mix with tcw3 acetone and toluene, toluene has 120 octane and has a lot of energy in fact is the formula 1 fuel, but i removed toluene for 2 main reasons:
1) smell bad and is toxic, very bad when you do the mix.
2) has low evaporation.
And is very corrosive on the gums.
Now only acetone the engine goes better more responsive and still the gas is stable since I use regular gas ,rubbish.
Is not so toxic and no so corrosive on the gums as well.