the other pc- Glad I didn't come across wrong, should've assumed we were on the same wavelength. IMO people make too much of the "dirt migrates into the wash media, away from the paint" while making too *little* of the advantages of wash media not retaining dirt in the first place.
You're sure right about the way brushes release dirt. I'm almost tempted to quit using a rinse bucket with the BHB/foamgun approach; sometimes at the end of a wash I can't see *any* dirt at all in the rinse bucket. For less-than-Autopian beater-car washes, the BHB/foamgun approach might be the best quick-wash technique yet.
Heh heh, it could be just the thing for the carwashes they do for highschool fundraisers, especially with a QD-spritz before the drying off. At least they wouldn't be inflicting the usual damage and the kids might even think it makes the job more fun.
