This thread’s took a turn and now has two questions. So here’s my routine:
For me, there isn’t a better finish for my solid-black Porsche than 4 to 5 coats of P21s with 4 to 6 days between coats. The depth, ‘wet’, the light reflection/refraction in the sun and shade is unmatched. But this car is a garage queen and rarely ever sees rain, snow or salty roads, so it’s exposure to the elements is negligible.
The Ridgeline and the Merc are 24-7 outdoor/daily users, and the Ridgeline gets its share of sand/stone/dirt access road on the way into mountain bike trails, and when the roads are salt covered. The same process for the Porsche goes on these two, but then use a sealant (KSG - 3 coats) to really protect all the abuse of the elements and the winter-sanded-salted roads in my neck of the woods.
I loose a ‘touch’ of the depth on the light silver-metallic in Ridgeline paint, again, that’s my perspective. The Merc is black with a fine-red-metallic (AMG color) … but I feel I loose a bit “more than a touchâ€� of depth when the sealant goes on. Seems as if the metal-flake doesn’t jump out and give the ‘flash’ red it does when I don’t go over the P21s with the sealant.
I choose to use sealant anyway as I’m convinced (or I just convinced myself) it’s a better, longer lived protection than just the wax for the winter abuse.
The second part of the thread: The ‘tacky’ effects heat has on wax has not happened since I started waiting 4 to 6 days between applications, with cold water rinses (w/Spotless Water System), just before the next application. Explained as being the ideal time for gas-off and total cure with each layer. This technique was given to me after much pleading with the owner of an entry in the Amelia Island Concours d’Elegance show (2nd place) from an Arizona car in that desert heat with what I still say was the best damn finish I ever saw and the standard to which I hold all details. I swear by P21s – so I don’t know if this technique will work with the other brands.
My two and a half cents - and several dollars worth of products.