I do like the word and can't think of any other to use, protective coating I guess, but then the car already has one of those so I don't wish to confuse things.
I don't seem to feel the cold much, must be the medication ;-), so I am happy to be out there even if it is raining, sleeting or whatever. Was out in my shorts the other day, maybe it's not the medication then maybe I am just plain bonkers.
Anyway, I just can't get my head around blasting water at our cars at all so no pressure washer for me, the cars never really get that dirty anyway and a hose gets rid of any salt...