845 or 476 for winter protection?

We live in the Northeast, do a lot of winter driving in the mountains, car gets coated with salt, sand, winter grime etc. We put several layers of 476 on last October and that did very well, still beading strongly in April (did wash a few times during the winter). I use 845 on my parents' car. I think 476 is more durable. I topped it with DWG and DPS in the warm weather months for looks.
 
Yeah, either or both.



I generally find the 476S more durable too. My fave is probably 845 topped with 476S, just seems to work really well.
 
Use both! I'm doing that right now. Fun to watch the water drops that one day SoCal had rain fly off my car while driving :)



I did 2 coats 476 and one coat of 845 for now. Going to add another 845 coat when I wash my car again :D
 
If I had to pick between 845 and 476, I'd say 476. A few layers of this stuff will provide more than enough protection. I love the slickness and longevity of 476.
 
cjbigcog said:
I like the idea of 845 topped with 476. Does 845 need to cure overnight prior to 476?
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I'm kinda thinking the other way around. Strong (476s) on bottom lighter on top (845) but i am not sure if this is any better than the opposite way.
 
I would not use 915 as a winter wax. When you ask the Collinite people, they say to use 476. Three layers got us through last winter quite well. Per Collinite, I let each layer cure 45+ minutes.



I have used 845 on my parents car and have not seen it strip any underlying wax, previous layers of 845 in our case.
 
cjbigcog said:
I like the idea of 845 topped with 476. Does 845 need to cure overnight prior to 476?
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Dunno for sure, but that's the way I've done it.



MBenz said:
I'm kinda thinking the other way around. Strong (476s) on bottom lighter on top (845) but i am not sure if this is any better than the opposite way.
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I want to be able to refresh the 476S from time to time, and I find that using the 845 first helps minimize issues with wax buildup around pinstriping/etc. And my wax-on-exterior-plastic approach works best with 845 as the bottom layer.



Not that doing it the other way wouldn't work fine in many cases.



wfedwar said:
845 seems to be loaded with solvents. I'd think it would strip anything beneath pretty quickly.
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Seems like it would, but IME it doesn't. I use it over 1Z consumer line polishes (which leave wax/fillers behind) all the time and it does *NOT* compromise them, not at all. People even use it over Meguiar's "pure polishes" (e.g., #7) with good results. Who woulda thunk it, huh?



How would you know..[that subsequent applications of 845 layer as opposed to stripping the previous ones]..
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I won't rehash my how-I-test-for-layering again, but I can assure you that 845 layers. This is another one I had to prove to myself; I'd assumed it wouldn't layer until somebody here (sorry, I forget who it was) insisted it did...I tested and yep, it does layer.
 
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