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dfpardo
09-21-2004, 09:37 AM
Whenever the windshield on my X3 is wet, round blotches appear that do not clear with wiping. They look like stains and are randomly placed with different diameters up to approx 0.5 inches. I have tried polishing the windshield with Autoglym Glass Polish, but it does not help. Any ideas on what this is and how to “fix” it? It has been this way since we got the car a few weeks ago.

Don

TOGWT
09-22-2004, 04:07 AM
Quote: I have tried polishing the windshield with Autoglym Glass Polish, but it does not help. Any ideas on what this is and how to “fix” it?

~One mans opinion / observations~

From your description (a photo would help) it sounds like etched water-spot or bird excrement

Are you polishing by hand or with a PC and a cutting foam pad?
Or try #0000 Synthetic steel wool and Autoglym Glass Polish

~Hope this helps~

Knowledge unshared is experience wasted
justadumbarchitect / so I question everything/ Jon

bmw330zhpfan
09-28-2004, 06:37 PM
Sounds like hard water stains.
Use Bon Ami Cleaning Powder. I had learned of this years ago and it works like magic.
You may think it would scratch, but it will not. Do not use the Cleanser. It contains some elements that may scratch the glass.
Apply it on a wet surface and using a sponge wash the entire surface with little pressure. Allow the powder to do the work.
I have had great success using this method.

Be certain to rinse with lots of water. While it is safe on glass, it is not safe on you paint's finish. Rinse and rinse and rinse again. Lot's of water.

Read this link: http://www.garageboy.com/bmw/bonami.html
and this one: http://the5and10.com/bonamicleaner.html

Don't let it dry on the glass.

One more link: http://www.unofficialbmw.com/all/carcare/all_use_bon_ami_on_windshield.html
Read the last entry of the post.

///MDex
09-30-2004, 06:15 AM
Sounds like hard water stains.
Use Bon Ami Cleaning Powder. I had learned of this years ago and it works like magic.
You may think it would scratch, but it will not. Do not use the Cleanser. It contains some elements that may scratch the glass.
Apply it on a wet surface and using a sponge wash the entire surface with little pressure. Allow the powder to do the work.
I have had great success using this method.

Be certain to rinse with lots of water. While it is safe on glass, it is not safe on you paint's finish. Rinse and rinse and rinse again. Lot's of water.

Read this link: http://www.garageboy.com/bmw/bonami.html
and this one: http://the5and10.com/bonamicleaner.html

Don't let it dry on the glass.

One more link: http://www.unofficialbmw.com/all/carcare/all_use_bon_ami_on_windshield.html
Read the last entry of the post.Ditto