My restorer swears by the use of Pledge polish on some under-hood and some undercarriage areas even on painted areas for detailing.
At first this puzzled me, but then I read the can and it in fact says for use on METAL.
I recently tried in right on the painted surface on one fender on my car (Black car) and BOY!! what a shine!! it to me out shines all the spritzer type quick waxes that I've tried, really nice, deep shine, I'm going to do the whole car soon unless anyone can tell me why I should not-the paint is modern Sherwin Williams base/clear......