Royal Purple HMX SAE 5W-30 High-Mileage Synthetic Motor Oil, 1 quart is designed specifically to minimize wear and restore lost performance in engines with over 75,000 miles.
Formulated with robust zinc/phosphorus anti-wear compounds combined with Royal Purple's proprietary additive technology Synerlec, HMX is enhanced chemically to revitalize hardened seals, reducing oil consumption common in engines with high mileage.
Additionally, HMX is fortified with stout detergents to remove engine build-up and deposits, maintain cleanliness and promote longevity of the engine.
The advanced Synerlec technology in HMX provides exceptional film strength, reducing friction and metal to metal contact for peak performance of the engine.
It also offers outstanding oxidation resistance to safely extend oil drain intervals, and an ionic attraction to metal surfaces, providing protection and minimizing wear at start-up.
Engineering formulations is a balancing act as engine oil has several key functions to perform.
Higher mileage engines require a shift in this balance in certain regards compared to new engines, such as anti-wear, detergency and preserving and restoring elasticity of seals.
Recommended for gasoline passenger car and light-truck engines beyond 75,000 miles, HMX can safely extend oil drain intervals up to 15,000 miles or 12 months in unmodified, mechanically-sound engines with proper filtration.
When using HMX, Royal Purple recommends first performing two short clean-up drain intervals of 3,000 miles each with HMX to thoroughly clean the engine before extending drain intervals.
Royal Purple HMX is suitable for use in engines specifying API service SJ, SL, SM and SN.
