Thread: Gas Milage???

From Reptile's Article, What is octane, KR? Explained here. :

Originally Posted by Reptile

if there is a slight amount of water in the bottom of your gas tank, the alcohol can grab hold of the water and separate from the gasoline, leaving you with a water/alcohol mix at the bottom of your tank with gasoline floating on top. This is not good.

Acetone is miscible with water as well and will likely produce undesirable effects, aside from decreasing gas mileage. Been a while since I've seen an engine fire.