Enhanced Diesel Motor Oil 10W30 HD CI/4, 1 Gallon

Royal Purple's Duralec Ultra motor oil is specifically formulated to cater to the demands of today's heavy-duty engines, maximizing performance. Fortified with a high level of zinc/phosphorus anti-wear additive and Royal Purple's proprietary Synerlec additive technology, Duralec Ultra is designed to deliver exceptional protection.

Synerlec's unique formulation creates a robust ionic bond with metal surfaces, providing unparalleled protection upon startup and significantly increasing film strength. This helps eliminate metal-to-metal contact, even under the most severe operating conditions. As a result, Duralec Ultra keeps internal engine parts cleaner than detergents alone.

Moreover, the superior oxidation resistance of Duralec Ultra extends drain intervals and minimizes oil degradation, ensuring optimal performance and longevity. This motor oil is recommended for use in both two-cycle and four-cycle diesel applications, making it a versatile choice for a wide range of heavy-duty engines.

The part number for this premium motor oil is 83456, providing a convenient reference for customers and technicians alike.

In summary, Royal Purple's Duralec Ultra motor oil is a high-performance lubricant specifically engineered to meet the demanding requirements of today's heavy-duty engines. Its advanced formulation, featuring Synerlec additive technology, delivers superior protection, extended drain intervals, and enhanced engine cleanliness – all while maintaining the brand's commitment to exceptional quality and performance.

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