To the original question:
Acetone is a good solvent for gunk, the kind of gunk that might be in the bottom of an old gas tank. Acetone could loosen it and cause problems.
This sort of thing happened in the first year of MTBE for many people. I know someone who had a lot of engine work done when the problem was probably a clogged fuel filter.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
