Why can't you leave POR 15 out in direct sunlight?

Do it work to cover/paint rusty body panels?

The bottom edge of the doors on my 93 Suzuki have started to rust. Would POR 15 work if I sanded down the rusty sections and painted the lower 6 inches of the doors and the rocker panels?


Blaine Dumkee
59 GMC 9314
Fort Smith NT
www.flickr.com/photos/northerngmc/