Originally Posted by
NoMoreBlackCars
Thanks Rippy for the clarification. It's suprising to me that in your test FK1000P didn't do as well as 845 and that 915 was so far back from them, since the majority opinion (rarely, it seems, based on back-to-back testing) is that FK1000P, Collinite 476, and DG 111 are the most durable, with 915 a step back and 845 even more. I could see how the difference could be due to wet vs. hot & dry climate, or due to just lack of controlled testing aside from yours.
PaulMys, thanks for the tip. I prefer the 476 application process as you describe it so I'll opt for that over 845.
So I'm gearing up for a 4-way test of 476, 1000P, 111, and PNS on the hood. Will be testing for durability through the rainy NW fall/winter, but also, in order of priority, for water spotting, contaminant resistance, dirt and dust shedding, and water behavior. On the adjacent fenders I have Gtechniq CSL topped with Can Coat, applied only 3 weeks ago, so that will be fascinating to compare alongside the sealants.
A big part of what I'm testing for is how pristine these protectants will keep the finish on my soft jet black paint. Coatings are great in a few ways, including a little bit of marring resistance and preventing contaminants from etching into the clear coat, but in my limited experience they are themselves fragile in terms of susceptibility to etching from water spots, and even, in some cases, bug guts and bird bombs, which makes them like a thin fragile clear coat that must be protected as much if not more than the clear coat itself.