Sticky Sliding Windows

The windows on our tugs get to the point where it is a bear to make them slide. Spray the upper and lower tracks with silicone. Force the window open and spray the rest of the upper and lower tracks. Slide the windows back and forth a few times and marvel at how much easier they slide. Periodically spray the tracks before the windows get to be too tough to open. This works especially well with the black Western Metals windows.