tkd_q45 wrote:Would WD 40 count?
Nope. I try to find the silicone with the least amount of ingredients, usually oil and plastic/rubber don't do well together for long.
While I realize that silicone is a petroleum derivative, if the can says it I don't buy it. The best stuff just says: silicone, propellant... or silicone, propane.
I also discovered that if the window sticks in the top channel at all, it can lead to a broken regulator assembly. I rubbed pure silicone grease all along the top channel with my finger, then wiped it with a rag to remove the excess and keep the grease from getting all over the place. (Like on your shirt/arm/jacket when you hand over the money for some greezy fast food)