[ford38v8]

Paint directly over rust is not going to stop the progressive damage of rust, but will hide it from view like an ostrich hides his head in the sand. If the rust is not removed completely, you must convert it to iron oxide before painting. There are several excellent products to do just that, one of which being Rustmort. This is a watery clear liquid, best if applied by brush after removal of flaky rust. As it dries overnight, the rust will turn black, signaling readiness to receive paint without further preparation. It leaves no brush marks and is not a coating, but rather, is absorbed into the rust in a chemical reaction. Wear a full face mask and rubber gloves for safety, but in my case, I was sloppy and even then did not experience any issues from splashing it on my arms and neck.