Gee, I guess I'm the cretin here. I've used the self-service car (pressure) wash since day one. I've never had a problem, except when I peeled the chrome off a stock mirror. I use the presoak on the front end to help with the bugs. I don't use high pressure on the engine, especially the air cleaners, or the chain (back when I had one). Occasionally I use Simple Green and a plastic brush on the wheels. I think I put a coat of wax on it once a few years ago. That Dupont paint is amazing stuff.
