Tough hard water stains on glass. Review of 'Nothin's Better' water stain remover
My 14 year old 323i has some serious hard water stains. I've tried using vinegar/water w/ wool pad, and tried using razer at an angle. The best of these two was the razer, but it only slightly made the stains less visible. Needless to say nothing was working. So I did some more research and on some mustang gt forum some guys recommended this product. I looked on ebay and picked it up for $8.99 with shipping. The product works very well. Just dampen a cloth, dip it in the poweder and rub it on the window until it begins to squeak. Here are some before and after pics of my windows. This is no bullshit!