[greenhorn male]

Why does the windshield need replacement if the spots are hard to see? Is there a safety element I am not aware of. Or is this for aesthetic reasons (show truck). Couldn't you take a blade and soap solution and carefully remove any specs. I see older windshields that have been battered by sand, dirt and small rocks that last another 10 years or more.

Oh, by the way lemon pledge spray bottle works well on scratches on plastics: plexiglass, lexan, etc. I've never tried it on glass but it made my bike windshield look almost new again after I thought I may have to junk it. I just squirt on, work it in, and wipe off. Repeat a few times using a soft cotton cloth only. Paper will scratch plastics. Not sure about glass.