Re: PPG Enamel Paint, I want to wax...
THe type of paint (enamel, urethane, whatever) shouldn;t make any difference in the type of wax, or the process you use.
Wash, with a quality car soap
dry with microfiber towels
clay, if necessary to remove embedded contaminants
polish with a proper product, the least abreasive needed for your defects
glaze for extra depth and richness
wax to protect the finish
Maintain with an instant detailer.
That should do it.