Rip,
There are lots of different methods for painting/protecting your frame from corrosion. The discussions here are very detailed and a little heated from the many posts I have read. There are some strong beliefs held
. Several factors will also effect your decision, use, level of appearance you are looking for, environment stored and driven in, and desired durability.
I use Rustoleum satin or gloss oil based paint. You can get the gloss in an industrial blend. " in my option ", what you use is a personal preference. Sure lots of different systems work and of course cost is a big factor, in which material you use, along with condition of your frame. I store my truck inside, and do not drive in winter weather.
Les