Good topic. For the first time in almost 40 years of driving(geez!)I am going to a professional car wash, which means I'm not doing it myself. It is a touchless, air dry. Fairly satisfied so far.
But for years I used the 25cent places, and for the past 15 years, the "spot free" rinse(our water in Az. is so hard we use it as flightline!). Through numerous cars, including 2 bright red ones, I have never touched a towel or chamois to the surface. Air dried, no problems with spots if the equipment is working right, and no swirls, scratches... Working in the rental car business I saw many surfaces ruined by rotating nylon brushes, felt straps slapping back and forth.
NOw I have to ask Dannys FAmily CArwash if they use these acids...and I thought I was doing a good thing.
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