I was just in the supply store today. I told the guy that I'm using Centari. I advised him that the metal has no bondo in it at all just in case this makes a difference. I read on line to prime the metal with Dupont Epoxy Primer and then to hit it with a coat of DuPont Sealer. He says the sealer is not needed because the Epoxy Primer is a sealer. Please advise me as to what to do. Plus, what chemical should I use to clean the metal before I prime? And what chemical should I use to clean the primer before I apply the Centari? I'm an engine guy and am still green to paint work. But I have to start somewhere. This isn't a show car. I'm repairing the trunk lid to my daily driver which has 150G on it but runs fine.