Whenever you need info on metal refinishing your best sources will probably be related to auto body or antique auto restoration / custom fabrication. The hot rod guys have some experience with the concept. Also worth remembering is that DuPont and Sherwin Williams are key players in the paint & coatings industry. If anyone can set you up with 'the good stuff' for metal preservation it may well be your local Sherwin Williams paint store or auto body supply shop.
http://pc.dupont.com/dpc/en/US/html/visitor/home/home.htmlhttp://www.sherwin-williams.com/regions/north-america/It has been years since I've looked into industrial or marine coatings but I recall the US Navy spends something like $80 a quart for black anti-fouling hull paint. Rehab Rush could make you believe that's expensive until you figure what it would cost to refurbish an aircraft carrier rotted out below the water line. Good paint doesn't come cheap but it's a bargain by comparison...
