Just to offer a counterpoint for this thread, There is an argument against washing your car after every salting/brining event, and just waiting till spring to do a couple extended cleans/rinses of the vehicle.

I’m not saying I agree totally, but there is some logic to it especially if it stays below freezing for extended periods of time(not these days). Every time you get the undercarriage wet you are activating and spreading the salt(water) further into cracks and crevices. That’s why you hear New Englanders say garage kept vehicles generally rust faster. You are ensuring multiple freeze thaw cycles happen everyday while dispersing saltwater at the same time.