The truck (2002) came from the dealer with undercoating. Some of the undercoating has gotten scratched off or came off when contacted with a solvent of one sort or another. Oe undercoating will wipe off with most any solvent like thinner etc.... makes a big mess but it does wipe off.

Since I'm going to the trouble to add new SS exhaust and a fuel cell w/braided hose fuel lines I'd like the underside to look as good as the top side. Can I use a brush-on black paint like Rustoleum or Eastwoods Rubberized undercarraige paints over the oe undercoating.