PennGrade Reliant Premium HDEO SAE 15W-40 is intentionally engineered to meet the demands of today’s hard-working diesel engines while continuing to protect the equipment owners depend on every day.
Built with advanced synthetic blend technology and enhanced additive chemistry, it delivers exceptional durability, thermal stability and wear protection under heavy loads, high temperatures and extended operating conditions. Designed for on-road, off-road and high-performance diesel applications, this formula helps resist oil breakdown, control harmful deposits and protect critical engine components in both modern and older diesel engines. For drivers, fleets and builders who demand dependable protection and long-lasting performance, PennGrade Reliant Premium is built to work as hard as the equipment it protects.
