Can I spray WD-40 on a squeaky serpentine belt?
Can I spray WD-40 on a squeaky serpentine belt? No—spraying WD-40 (or any “belt dressing”) on a serpentine belt is not recommended. It may quiet the noise for a moment, but it often makes the belt slip more, attracts grime, and can damage components. Squeaks and squeals usually signal wear, misalignment, contamination, or a failing …
