I realize that does not make sense to the younger crowd, however those paints, both DuPont and PPG, as well as some BASF, OEM paints were what us old guys learned to refer to as "poly" paints.
Notice that what went off on the pad was "black" for the pad residue.
That's like what one would see on a 60's era Mustang, most Ford's, most Chrysler's, not so much on GM's as they were still staying with a lacquer based system.
Floyd taught me that, and to prove him wrong, I tried a lot of things, damn-Sam, he was right.
Even using some 30w motor oil, cut with 10% keosense, would do some quick good.
Not like the HD cut, we had to then move to a "polish" and a lambs wool,so it took two steps, vs your one step.
Grumpy