As far as your acetone question goes, the most common formula I've come across is 3 oz acetone per 10 gal of gas. And you should be fine if you want to try it in your Saturn w/ the plastic lines. That is a very common style of fuel delivery system...my Cavalier has it, and I've run boo-coo amounts of acetone through it w/o any probs. In fact, I've used an acetone/windshield washer fluid mix in an H20 injection set up that has plastic lines and a plastic reservoir w/o any probs.
unstable bob gable
AMERICAN ROAD WARRIOR!