Thanks for your post I think I will try it as a maintenance coat every 3-4 months over Cquartz. My environment is far beyond the average for harshness. I live in northeastern NV and call on the mining industry. In the winter and spring, our trucks get washed daily, and not the two-buck save the finish kind of a wash. Sometimes it's the "zero degrees out I have so much mud on the wheels and suspension I have to knock that off before I go down the highway and the heated pressure washer at the car wash is freezing to the sides of the truck instantly as I try to blow off the crud kind of a wash". Or it's the desert in summer 0% humidity and hot and your fighting water spots. All of the mine roads are dirt and some are spayed with mag chloride, a soap/mineral solution that makes road salt look like child's play. I have been looking for something a little more resilient than any of the spray bottle Maintenace toppings, but easier to apply than Cquartz. Cquartz has to go on level or you will be buffing it off. I have a truck ordered and getting PPF on the full front, hood and fenders, and also the rocker panels, and will top with this combination and see how it works out. Thanks again, great write-up.