Rust and Paint

clean the rust and entire bar. I use rust-oleum Rust Reformer (Lowes, Home Depot, Wal-Mart) It bonds to the rust and gives a paintable surface, I have used it for several years. Just paint and rust will be back quickly. Quality paint is much better than cheap stuff. I had a coachman class c and bumper was like that. after painting with reformer and top coat 5 years later when I got rid of it , still looked good