I have a detail coming up on a 72 Mustang (yellow) and I was thinking of using PPCL+RMG+Trade Secret. Am I just wasting my time the PPCL? Do you think I should just go RMG+TS? The paint is original SS in good condition.
Noting that I have no experience with RMG (but have used similar products), I *would* use the PPCL. It'll clean the paint with a minimum of abrasion (just a *very* little bit) and I don't think the little it leaves behind should cause any problems with the RMG. PPCL is a nice product for applications like this one.
I'd go with the PPCL, for sure. Its 30 year old paint, and regardless of care, it will take on some small bit of oxidation, contamination, some sort of -ation. RMG and TS is a great topping combo, too.