I don't know what's in the Meguiars, nor how much the stuff costs, but I use VM&P Naptha at the guitar repair shop all the time. Cuts oils, adhesives, waxes, grime, etc. and leaves the paint paint entirely alone -- including fragile lacquers. Dries quickly -- no residue. Cheap! At your local hardware or paint store. Don't let it sit on your rubber too long, however...