Join Date: Nov 2008
Location: Greater Pittsburgh, PA
Invisible Glass during the early morning or late afternoon when the sun isn't directly shining on you. You'd get better results. Use a microfiber towel instead of paper towels, I found that this works better.
FYI: Its suicide to try to clean your rear window in direct sunlight, I spent 5 minutes trying to line up a Penn State decale on the rear window, and I was sweating buckets by the end of the five minutes. Then again, it was like 80 degrees and I have a black interior, but still, that massive rear window magnifies the sun's heat wickidly. Viel Gluck!