I just purchased a set of wheels with a black painted center and machined lip. I want to apply a sealant on them to protect them from brake dust and also to make them easier to clean. I currently have SG, UPP and AJ in my detailing arsenal. Which of those do you think I should go with? And, is it necessary to prep the surface first seeing that these wheels are brand new, other than washing them first? Thanks for the help.