Quote Originally Posted by FordMan77 View Post
Also grease the guides as they tend to dry out and grab the glass on the way up. You may want to pull the door panel to get the lower portion. Even with new regulators/motors my drivers side was slow to go up until I did this. Also spray the felt guides around the window frame with some type of lube. I found one that dries w/o leaving streaks and it made a world of difference.
what kind of grease or lube?

thanks