Im trying to clean a windshield of a vehicle that’s been sitting outside for years, and it has a foggy area it looks like a stain with drip marks. It’s on the outside, I’ve tried razor blades, mineral spirits, vinegar, even polishing compound. It’s a little better, but still large and too bad to use in current condition. When water or gl*** cleaner is on it it’s gone, but when dry it’s back. Any ideas?
Years ago the windshield doctor guys advertised polishing streaked w/s gl***. Maybe someone still does it ...
You could try some Bon Ami Original Formula powder cleanser: http://www.bonami.com/index.php/products/powder_cleanser/
We had a bunch of police cars that were used for skid training. They ran on wet surface all of the time and the water got on the windows daily . The water fogged the windows and nothing we tried and we tried everything worked . We had to replace the windows when they got bad enough that it hindered the vision of the students. It permeates the gl*** and you can't get it out.
We tried just about everything . We had chemical companies coming in with every product you can think of. Razor blades ,steel wool , Rubbing compound wouldn't touch it . Would only leave scratch marks on the gl***. Once it is in the gl*** it won't come out. We even had a lab ****yze the gl*** and it soaks into the gl***. It was a major expense to change out all of the side gl*** in 40 cars.
Worked in a Refinery in S/W Louisiana for 33 years, all our vehicle windows would get etched from cooling towers and stacks. We bought a compound called Cajun New Gl*** followed directions and it worked great. Don't know if it is still out there worth a look.
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