"So what is the proper grease for the window motors?"
I've used Dow Corning Molykote 33 Light for the plastic gears in window lift motors, windshield wiper motors, door lock motors. DC 33 Light a silicone grease (lithium base) and won't damage plastic gears/housings.
Amazon product ASIN B0141NIS8M
I've used Dow Corning Molykote 33 Light for the plastic gears in window lift motors, windshield wiper motors, door lock motors. DC 33 Light a silicone grease (lithium base) and won't damage plastic gears/housings.
Amazon product ASIN B0141NIS8M