I STFA, but just wanted to make sure I had my facts straight. My gf`s father (so it`s important I get this right) is using an abrasive wax (some sort of Dupont stuff, I think) on his `93 Miata and says he`s been getting good results on the metal sections of the body, but wants to know if the stuff is safe to use on the plastic bumbers, which are painted to match the body.

So, is an abrasive wax safe on painted plastic bumbers? Sorry I don`t have more details on what product he`s using, etc., but any help is appreciated. TIA.