try http://www.por15.com/
It is supposed to be a not only a superior rust preventative paint, but also you can paint it over rust, it is supposed to bond and stop rust forever. It jas a hard black glassy surface. They have an eval kit. I got it but haven't tried it yet.
It is supposed to be a not only a superior rust preventative paint, but also you can paint it over rust, it is supposed to bond and stop rust forever. It jas a hard black glassy surface. They have an eval kit. I got it but haven't tried it yet.