If you needed yet another reason to avoid drive-thru car washes...

kenchan

i mean if the car's just dirty from rain and on-road dd'ing, waterless will do just fine.

i use it all the time on my dd. use product liberally, only use the clean side of towel,
never make more than one pass in one direction with the clean side of the towel while
panel is dirty, etc.

just all common sense.

working from the bottom of the car up is fine. you use fresh towels each time anyway,
and you dont worry about your clothes rubbing against the lower panels while reaching
your roof, etc and swirling the lower panels.