Teflon coating?
#3
I know the Chrysler dealership I used to do bodywork at (yeah I got cut up P.T's for fun) would sell a package to people that was actually a pretty nice sealer for a lot of money (around 700.00) you could get it at Autozone for 50.00, same stuff minus the acid wash. There is NO magic cureall, I think they are a waste of money. Thats my .
#5