1. Clean surface with alcohol swabs
2. Use fine Emory paper and carefully buff the damaged area about 1/4 " larger than the damage area. Just enough to feather any damage area -- dont dig down into it -- just clean it up.
3. Rustoleum or Krylon Appliance White Paint
4. Tape off the area that needs to be painted about 1' area larger than the damage area. (cover rest of cylinder)
5. Spray paint in dusting manner --- let dry -- spray again -- let dry --
6. take Emory paper and give a light buffing to smooth out any bumps --
7. Repeat last coating . let dry -- it should have a smooth finish.
Thanks. This will be my plan. I will skip the re-application of ZRC because of their warnings about their product not being suitable for the top coating you and Blue Steel recommend.
Interestingly ZRC does have a published white paper on recoating galvanized tanks. They also have a white paper on the positives and negatives of topcoating the zinc. In some cases it is a plus. In others a negative because it prevents a hardened surface from forming on the zinc and allows water to penetrate to the steel.
---------- Post added June 27th, 2013 at 09:13 AM ----------
So my utility trailer will fail hydro?
Apparently there is a disconnect between the theoretical adhesion of oil based paint over galvanizing and reality.