I took mine to a touchless -high pressure car wash. Water came in badly. I did find a drive-thru car wash with the chamois & soft brushes. Works fine. The owners manual will suggest not using a high pressure system car wash. When you meet local people(with converts) at car shows ,gas stations, parking lots, etc. ask them who they are using. I was talking to another conv. Stang owner and asked him where he got his washed(and if any problems) and have been using them as needed.
If you find a good car wash ask them to lift the blower as the car passes thru.A dollar tip here and there goes a long way