| You could try Rustoleum Red Primer. It has fish oil in it, and actually works quite well in penetrating existing rust and preventing additional rusting. You'll want to brush off loose rust, apply a good coat of red primer, and then let it dry for a couple of weeks. Longer in cold weather. Once it's hard to the touch, it can be painted with a good oil-based enamel. Don't remove all the rust - the primer needs rust for the oil to penetrate. Otherwise, there will be a slick of oil on top of the primer, which could make top-coating difficult. However, I've had good luck by wiping down dried primer with a degreaser and had the top coat stick just fine. The Rustoleum Red Primer contains no lead, although early red primers had red lead oxide in them. |
