Washing frozen bronze
Does anyone know whether the fluids / solutions typically used in commercial hand car washes are OK on a BMW frozen colour.
I've just ordered a 4 series in frozen bronze - for the last 5 years I've taken my 3 series to a local hand car wash - they use pressure sprays (but not too close) then wash the car with mitts and leather dry. Not sure what chemicals they use though - presume it's normal car shampoo.
Obviously I can ask them... but I wonder what others' experience is..
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