Pylon Strip it. See in PAD Forum, in the Reviews section.

Meguiar's also sells a glass and chrome cleaner. P900 or P1000 yata, and good for 10 cars daw (windshield and all windows), so good for siguro mga 20-30 polishings kung windshield lang.

Kung maliit lang talaga ang scratch, baka AUTOSOL metal polish will be fine.

--Alf