Hers is another use of Tremclad(rustoleum) Rusty Metal Primer.
For autobody finishing( can already here some cringing), strip or sandblast panels, doors, fenders etc. Treat with acid wash, roll on or mix rusty metal primer with automotive enamel reducer, and spray.
2-3 coats, let this cure for a good while 2-3 weeks, then all fillers, glazes, 2 K urethane primers, lacquer based primers can be applied over the rusty metal primer, ONLY ONCE IT IS FULLY CURED. Rusty metal primer, has amazing adhesion, and corrosion reistance properties.
I have done my 47 Chrysler like this, rusty metal primer 1st, then fillers, then 2 k urethane primer/surfacer, then enamel with hardener for a topcoat.
This idea, was passed along to me by a fellow forum member, but i have since met others who have done and do the same. I have also met those who think this is a very poor idea, and many have told me so.
I have no problems with my paint job, and if I wanted to go BC/CC, would scuff, should a sealer, then shoot on the BC/CC, if I wanted to go that route, but I don't.