I recommend a spray with phosphoric acid and wipe down with paper towels while it is still wet. If it drys before the wipe down, rewet it then wipe down. I like Master Series Silver for a primer. It was originally designed as a bridge primer. Master Series totally seals the metal and is better than other products on the market. Check You Tube for a comparison.
Wayne 1938 1-Ton Farm Truck Stovebolt Gallery Forums 1989 Silverado 1996 Mustang GT convertible When I die, I hope she doesn't sell everything for what I told her I paid for it!