[II kings 9:20]

Back in the 80s DuPont had a sealer that once applied the car never had to be waxed and stayed glossy forever, I doubt it really worked quite that well. I am not sold on dealer applied sealers, they all will wear off with wind, grime, and rain. You will still need to wax regularly. I thought clearcoat finishes were supposed to eliminate the need for paint sealers, it's already sealed with the clearcoat. Whatever product you use CLAY FIRST, don't grind grime into your finish, I am sure the dealer applied sealer is NOT pre clayed.