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touchless car washes will shoot water into your passenger compartment (annoying, but not usually harmful) and can really mess up your engine intake by shooting water up into your filter housing (can be very harmful).
Using rubber gloves in cold weather or paying someone to hand wash your car with YOUR car wash soap and microfiber towels is probably the best way to go. The hand wash guys around Houston use dishwashing liquid, which strips off all your wax and sealants fast, and dirty towels or sponges that just scratch the clearcoat.
Providing the soap and towels would probably be a good idea in you area too unless they can prove they use better than average supplies.
... I just re-read this before I posted it. Man, I am indeed an anal Porsche owner.
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