I picked up a 2007 Toyota FJ Cruiser. It had been vandalized in a protest. It had been sprayed on both sides with black paint. I got the spray paint off with Rupes Blue Course compound. Had to use a little wet sanding on some thicker spots. The factory roof rack is mat black, metal. The mat paint is pretty oxidized. I want to get some life back into it. Suggestions. I am thinking a liberal amount of a liquid cleaner wax. Thanks Phil