In 1997 I restored my '55 Willys CJ5 Jeep. The frame was REALLY rusty. I wire wheeled it down, then used Marine Primer on it. I forget what the stuff was called but it's weird light gray color and pretty thick. I just brushed it on, but it looks like I sprayed it. For a top coat I just used gloss black Rust-Oleum. It still looks fantastic to this day. I don't know what that primer is made of, but it's indestructible. I had a brake fluid leak that stripped all the paint of an area, but it didn't even soften the primer. I was amazed. I suggest going to the local paint store and ask them to reccomend some kind of high quality marine grade primer. When you get it home, brush it on so you know it's on there nice and thick. Worked good for me
