The reason you paint correct on a new car is to remove all defects and any contaminants before you seal it with a nano coating. It is nearly impossible to damage paint with the
Porter Cable unless you use a heavy cut pad, heavy pressure and a heavy cut polish. In other words being stupid about it. Use the Porter with a white or orange pad, I like
this compound for quick jobs no it won't give you an absolutely flawless shine that takes several steps. But the finish will look much better. If you're lazy
use this one step compound
BTW most new vehicles are poorly washed and detailed by the dealer I've seen many that are badly swirled. I was at a dealer the other day the cars on the showroom floor were screaming out for paint correction.