DThelen- ive tried that acetone trick in my 1998 Neon- I was "unhappy" with the 38+ MPG I was getting :-laf , I went to a paint store, bought a can of acetone, was definitely not impressed. Granted, it was winter, but the car actually seemed to suck down gas quicker than before. I will give it another shot in summer, weel see what happens. acetone is expensive too! the acetone isnt gonna come near my 04 CTD- I am very happy with the mileage im getting (18++) so Im not gonna try and fix it!