Can't disagree, blasting to white metal followed by zinc, epoxy & topcoat is ideal. But, due to budget concerns, it's not an option. (Additionally, finding a yard that will allow sand blasting anymore is difficult!) I've ground out some of the areas of rust bleed and for the most part they're insignificant. Based on this, I believe a heavy sanding (80 grit or so) will adequately prepare the existing paint. Just wondering if anyone has any experience with Rustoleum, maybe using their clean metal primer followed by their Stop Rust paint. From what I read, Rustoleum was originally developed as a marine paint for steel fishing boats... Another alternative is to use a DeVoe system of Amerlock Sealer epoxy for a tie coat followed by 2-3 coats of Amercoat satin top coat.