Yeah I'll do this this weekend on my driver's window. It's so damn slow coming up. Should I do it with the window down or up? I mean I haven't tried silicone spray before, so I don't know if it'll ruin my glass if I do it with the window down? ThanksLEgEnD4LiFe said:go get some silicone spray and spray it in underneath (pull it back with ur hands) the rubber insulation that covers the outside edge of the rear of the window.
dw-40 will also work.