"Phil Wood Tenacious Oil is built for the contact points where a thin bicycle component oil fails first: pivots, threads, and bearing surfaces that run hot and loaded. The heavier viscosity keeps the film intact under real pressure, and the rust inhibitors do their work in wet conditions where lighter lubes wash away before the ride is over. What Our Gearhead® Experts Are Saying:""I use this on any component where metal rides directly on metal. The rust inhibitors and extreme-wear additives blended in at Phil Wood's facility mean it keeps protecting long after a lighter oil would have washed out."""