Acid Rain?

[Steve Vague]

My wife just had her car detailed, and no it's not a Cobra, but she puts up with mine. The detailer claimed he could not get her windows clean as they were etched by acid rain? The paint on this '93 BMW is original and perfect. How can the glass be etched? Has anyone any experience with this and a possible solution?
Regards,
Steve

[luke-44]

I am in the business of linings for flue gas desulfurization units for power plants ("acid-rain" removal stuff), so I think I have some perspective on this.

Unless you live a few miles downstream from a dirty coal burning coal-fired power plant, I would highly doubt acid rain is the culprit.

By the way, glass is pretty resistant to acidic condensate - think test tubes and beakers.... What happens most often is the paint gets damaged, and the utility buys you a new paint job. Glass, however - no.

As for a fix to your glass problem - not my area. Cheers

[Thorin]

BMW's have very "soft" glass, compared to American vehicles - have no idea why, but it is discussed on the BMW forums.

Re: the acid rain theory, I don't want to turn into another Roscoe; so, I will leave it alone.

David Lowell