Originally Posted by MattyTee
Every other week or so hit up the touchless wash, they have an undercarriage spray and I go reeeeal slow. I do hit the automatic was from time to time as well. I know it's not the best, but I don't have time to do it myself most of the time unfortunately and they're at least half way decent.
This is exactly what I do. Just hosing it down underneath at a drive thru carwash every couple weeks during the salt months helps a lot.