Engine oils need to be able to consistently respond to changing environments in your engine. During every moment of the drive, your engine oil needs to be able to react to the needs of different metal-to-metal contact points in your engine each with different demands, pressures and temperatures. Castrol EDGE Extended Performance – Castrol’s premium full synthetic oil- is uniquely engineered with fluid titanium technology provides unsurpassed protection for critical engine parts, ensuring optimal performance- with strength to enable an extended drain interval of up to 20,000 miles*. * Extended service is not recommended in severe service applications such as racing, frequent towing or hauling, commercial use, extremely dirty/dusty conditions or excessive idling.