Royal Purple® HMX® is specifically formulated with robust zinc / phosphorus anti-wear additives and Royal Purple's proprietary additive technology Synerlec® to minimize wear and restore lost engine performance. HMX is chemically enhanced to revitalize hardened seals reducing oil consumption common in higher mileage engines. Stout detergents remove engine deposits and maintain cleanliness promoting engine longevity. Royal Purple's advanced Synerlec technology provides an exceptional film strength by reducing friction for peak engine performance. Synerlec also provides outstanding oxidation resistance to safely extend oil drains, and an ionic attraction to metal components maintaining a film of oil on parts minimizing start-up wear. Royal Purple Oil Filter features 100 percentage synthetic micro-glass media for superior particle removal with 99 percentage filtration efficiency at 25 microns. This product is designed with a high-performance silicone anti-drain back valve that prevents dry starts, even in extreme conditions and an extra heavy-duty rubber base gasket that ensures a leak-free seal. The Royal Purple Oil Filter also provides an ultra-strength filter housing that can endure higher burst strength than conventional filters. Royal Purple filters are fully compatible with all synthetic and conventional oils, provide superior particle removal, high-performance, optimized flow characteristics for maximum performance, and longer filter life.