Is it possible that acetone's properties make it a bad choice as a gasoline additive? I mean, could it create problems for gas, especially with as far and as long as gas sits before actually being burned? Maybe it's too volatile. Maybe it absorbs water (hydrophilic). Maybe it breaks down some of the other EPA crap. I don't know.

The acetone thing seems like (what did you call it?) voodoo at first, but there are too many "it works for me" type reports to complete dismiss it.