So the weather has finally been nice so I decided to wash the car. It looks great except for the windows. We have extremely hard water here and it seems that no matter what I do I can never get the windows to come out without water marks. I was using Meguiars NXT Glass cleaner but that was leaving streaks on the interior class. Now I am using Stoner's invisible glass. However the streaks in the pictures are water marks and not related to the glass cleaner. The only way I could get any of them off was with my finger nail.
I have been reading a lot of the forum and everyone has a lot to say about windows. RainX, Zaino, clean with newspaper, clay the glass, etc etc. I am going to try claying the glass tomorrow, but does anyone have any ideas on how to remove these safely and easily?
The first picture makes them look extra bad because of the flash.