Seeking cleaning advice my windshield.
Somehow my windshield has become especially dirty recently. It is a grime type film that is really baked on somehow. Car washes, window cleaner, and household grease cleaners have had no effect. Some medium scrapping using a plastic access card (not recommended because they can be expensive to replace) helped as in the picture below. However, there must be an easier and faster way to do this without any risk to body paint or window seals.
Normally, when not facing the sun, you can hardly tell this film is there. However, as in the picture below, when the car is facing the sun, it creates a bit of opacity block.
Thank you!