Sep 09, 2021 · Lubricant better: WD-40 is a high-quality grease that works right after the application. You can use it on glass, wood, steel, iron, vinyl, etc. making old railing, gate, window runs is easy with it. Lessen the noise: Old doors/windows may stick, but what about the new ones that often sound or do not slid fast? Well, WD-40 will solve that.