Those things are your paints worst enemy:thumbdwn: They will without doubt cause swirl, etcalanra said:I'm also a little worried about using the foaming brush thingy at those car washes over the long term; it seems like it would get pretty dirty, and that plus the hard bristles would be tough on paint.
I would think that most of the quality shampoos (Sonax, P21S, etc.) would cause minimal problems. Plus you shouldn't be going overboard with the amounts so IMO its ok. Because of drought here we can't wash at home so I go to self serve with buckets and only use the light spray to wet and rinse.But... I've heard that washing your car at home is pretty bad for the local environment. My house is near a lake, and the storm sewers drain into it.
So I'm trying to figure out... is there a nice eco-friendly shampoo I can use that minimizes this impact? Or is the real impact from all the road grit and grime that comes off the car, which shampoo doesn't affect?
Thanks in advance.