Looks like you're on your way to solving the root of the issue! I just wanted to make a few comments on the penetrating oil comments above, in case you need to use them on other projects: Penetrating oil made with fast-evaporating solvents is primarily a thing of the past. Most products have much lo...

My name is Dr. Larry Beaver, and I'm the lead chemist at Liquid Wrench. Great question about your window. Silicone spray will likely streak the window and be difficult to clean off any excess. Run down the window and spray the tracks with our Liquid Wrench Dry Lube, then let dry. Run window up and d...