Premium Multigrade Engine Oil typically refers to a high-quality, advanced, and often synthetic lubricating oil designed for use in internal combustion engines. It often uses synthetic base oils, which offer superior performance, stability, and protection compared to conventional mineral oils. The combination of high-quality base oils and advanced additives contributes to improved engine protection and cleanliness. The "premium" designation suggests that the oil may have enhanced performance characteristics compared to conventional oils. Premium Multigrade Engine Oil is designed to reduce friction and improve fuel efficiency and may contain friction modifiers that help minimize energy losses due to friction between moving parts.