(PB) B'laster polish and cleaner beats everything else I've ever used. Takes off bugs, black streaks, tar, etc. etc. And is really easy to apply and wipe off and can be used in brite sun. I don't even bother washing the TT first. Works good on rubber gaskets and glass. Beats Nufinish by a mile, leaves siding with a very clean and shiny surface, lasts longer than wax (polish is much better than wax, no build up). Problem is it is very hard to find. The one place I've found it is at Hardware Sales, a gigantic hardware store here in Bellingham WA. (Made by the PB Blaster penetrating oil people). I also use it on my very oxidized 65 Chevy Van, it'll give me a little semi gloss shine for a while. NuFinish didn't do anything.