As a kid, the guys who made the most out of making their cars last would hose down the underbody and spray with the oil they had accumulated from oil changes. It was a Fall/Indian Summer type activity, which is what got me thinking about it. I just don't know anyone who has a lot and is willing to do this anymore given the environmental issues of the day.

Ziebart was a big thing with fleet trucks, but it was never as effective as the guys who sprayed oil every year.

The best car washes IMO, were the wash racks on base used by heavy trucks and tracked vehicles. The ones with the shallow dip filled with water you could drive the vehicle in and sit there for five or ten minutes before driving out and onto the stand where you could get under the vehicle with a pressure washer. Just sitting in the water for a that short time would soften up the mud and allow the pressure washer to just scrub every bit of mud off. Hit it with a wire brush and then let it dry. Does anyone know if Ft Carson has a wash rack like that?