[cooperino]

Originally Posted by olds45512

Oil works great, it really helps the dirt stick to the panel.

On the underside I definitely will use Por-15 or similar. On top of that I think I might use Rustoleums Aluminum. I used it once on a flatbed wrecker I had and could not believe how tough it was. Dragging cars and trucks up and down, some with no wheels and wrecks barely scuffed it. It sprays on really smooth and gets super hard. Topside will just be rusty metal primer and some single stage white I have hanging around. Maybe paint the guards yellow.