Several years ago I worked as an Independent Sales Rep for Crest Products. We supplied specialty chemical products, adhesives, etc. to body shops.
One of the most popular products we had was ACRY-SOLV, a solvent cleaner. It would easily remove wax, silicone, grease, tar, undercoating, adhesives, sealer and road paint. This product was used mostly as a Pre Sand Solvent but most of the shops used it to clean off the paint before doing any body work.
Crest also made two additional aerosol solvent cleaners which were much stronger and used for other purposes.
I have used ACRY-SOLV not only on painted surfaces but on interior plastics that were stained with grease. Made short work of cleaning.
Midnight Blue