Replace the windshield. I spent over seven years in the windshield repair business. I was able to repair bullseye and star breaks, even long cracks. Had a polishing system that was state-of-the-art for removing scratches left by wiper arms. There is noting N-O-T-H-I-N-G that will satisfactorily remove pitting in windshield glass regardless of anyone's sales literature.

Just my 2ç.

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1980 300SD 146K miles.