Who makes good paint?

Dp primers were great before they removed the lead. Dplf is quite transparent especially the white. I still liked using it just not as well. In my opinion there are far better options now than Dplf. Most newer epoxy primers are now sandable where Dplf is not.

I used to mix the clear additive with PPGs 9800 in the 90s with good results but as stated only good for solid colors. In my opinion if you want clear coat depth just go base clear and be done with it.

The Dp 402lf is the normal catalyst you'd use. The 401lf suggested above for plastics was no different other than a slower dry time and also required a 30 minute induction time. The only reason it was suggested for plastics is it allowed it to be flexible for installation. Dplf dries pretty slow and has a 72 hour pot life and I never used the 401 as it is very slow.