The best solvent that I use for cleaning off oil, fir pitch out of clothing, etc. is BBQ lighter fluid outdoors in a well-ventilated space. It doesn't much affect car paint, most plastic, clothing dyes, etc (test it first).
Old acetone can have reacted with itself (shame on you, acetone!) to produce a condensation product that is less volatile and might be a bit oily.
I use diesel fuel for crude cleaning but BBQ lighter fluid for the wipe off. A couple hours ago, I used it on the outside of my oil pan before painting. That was after Gunk degreaser.
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.
