New 1948 Jeep CJ2a Owners

[bmorgil]

I an pretty sure POR15 is self etching, meaning it is intended to come into contact with bare metal. I have seen a lot of guys paint over it and it works OK like that. It is not intended to go over any type of paint however. That stops the idea of POR15 preventing the corrosion by its chemical reaction with bare metal. If you want to prime (and you should), you can treat the clean de-greased areas with POR15 rust stop/metal prep then some POR15 self etching primer. A top coat of POR15 after that will be rock hard. POR15 definitely works best on clean, de-greased and zinc phosphate coated bare metal.