High-quality HUDY Bearing Oil is used to lubricate bearings for ultra-smooth operation and long lifespan. Very good for use on dusty tracks and carpet tracks because it helps combat the effects of dust and carpet hair contamination. Super thin to help promote quick penetration and fast & easy coverage. Recommended for use immediately after bearing cleaning (e.g. with spray cleaner). This oil is used only for bearings in a car, not inside the engine.