toluene: octane booster?

whats the haps on toluene, I've heard that it's some kind of paint stripper that you can buy at paint stores that supposed to increase octane levels for boosted cars. I guess your supposed to use a certain amount of toluene when you fill up with premium gas and you can increase octane levels about 15-20 points...which would mean if you put in 91 octane then you should get 92.5 -93 octane fuel after you put in about 20-30%toluene(from a gallon) with a full tank of gas. I've heard stories of this stuff really working....quite well in fact. I'm thinkin about doin this...If anyone knows more about this stuff, reply.