its raining here in so cal ..
my question is rain water considered "hard water" ?? will it leave water stains that etch into the paint due to minerals??
i know acid rain can etch.. but im talking about just normal rain i suppose... if i leave rain water on my car for a week.. will it etch and leave a "ring" like tap water would???
will rain spots just be washed right off at the next wash??
thanks
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