[Nickshu]

Just to followup on this thread, based on some advice here I took my Subaru thru a local, new, foam brush non-touchless carwash this winter 3-4 times. The car is clearcoated black metallic. This weekend I did my spring wash/wax on our daily drivers. I found swirls all over the rear hatch from the carwash. I did not find them anywhere else however. I'll be going back to the touchless washes. While the chemicals may be more harsh I think the potential for visible damage is less, as I've never had a problem before.

Where I live with all the Mag Chloride they dump on the roads I think leaving the Mag on the paint and trim (especially chrome) is more damaging than the chemicals from a touchless wash.