[Ron in Quincy]

When working on fenders, sheet metal, new bare metal, I use Dupont 5717S, a metal conditioner. It come in a plastic quart bottle; you mix the quart with 2 quarts of water. I wear rubber gloves when using it, also in a good well vented area.

I have put this on new metal and left it exposed for several years with no rust film what so ever. After sand blasting a fender, for example, I go over the fender with 400 wet or dry to remove ruffness then wipe the fender down with the metal conditioner. When I primer I found it is not necessary to remove the conditioner; I have never had any primer or finish paint lift from the surface.

Ron