A paint manufacture near by told me that a UV protectant can be added to rustoleum, I think most all these paints are alkyd enamels which means they do the cross link thing that the epoxy paints do, only it takes time for them to cure. They are not as fuel resistant as the epoxy paints are, I'm sure a hardener can be added. IMOP rustoleum is good paint, better than the factory had back in say the early 40's I'd think.
For the last question yes, you d want to strip it.
Last edited by Truckrolet; 05/07/2011 12:11 AM.