I clean my tips with a product called Cerma-bryte or Blue-Magic, either makes them shine like crazy afterwards, as for as the tonneau cover I just wash it with Armor-all car wash and then wipe it down with Armor-all, and as far as the black plastic I use the Armor-all orange cleaner wipes. And just for an extra tip... Meguiars gold class wax works good and goes well with their Show car shine wax in the bottle.