1) I do think WG CSC could have been impacted by PBL Surface Coating underneath, but even more so, I believe temperature during application and curing period impacted WG CSC and PBL. The products were applied before the weather stayed warm at nights. I have gotten much better up front performance in the below test which was begun in June and cured during warm weather throughout.
https://www.autogeekonline.net/foru...n-test.html?highlight=SiO2+Ceramic+Spray+year
2) I don’t think WG CSC will survive a year unless on a garage queen or some sort of perfect, mild weather area with very little contamination present. I would think 6 mo the is realistic based on my latest test which is at 3 and going strong. And I have been on record saying it’s so easy to apply that you might as well put it on every few months just to keep things fresh, it’s one of the easier spray ceramics to apply. Maybe 15-20 mins for the BMW and although it’s not a fact, I would guess you could apply this as a drying aid if the car was 80% dry and it would still perform well as a topper on itself.
3) I don’t know if there is benefit stacking PS on CSC or vice versus, but I don’t think it would hurt and each bottle has so many applications, I wouldn’t be concerned wasting product to try it. They are both very nice. Arguments can be made for either order of stacking. Same company, WG products tend to be synergetic with each other. I could see some potential there (for instance the sealant helping resist etching while the spray could aid in water behavior and easy application updates).
4) There’s no claim I’ve found for WG SiO2 PS durability, however, general, conservative consensus from us forum members would be that it lasts as long as DGPS with the added benefits of self-cleaning that SiO2 ingredients clearly provide.
5) I compared WG SiO2 PS with FK1000p on my trunk in the below thread. I did not get the same stellar results with 1 coat of FK (first time using it) as others have. It wasn’t a slouch but it didn’t keep up with WG or PNS as far as water behavior. Kind of wish I did two coats for the test. The same thread below can also be found on Autopia forum for further commentary.
https://www.autogeekonline.net/foru...est.html?highlight=Acura+traditional+sealants