Excellent wear protection: increases the life of all critical engine components. Excellent water resistance: helps maintain a strong lubricating film in the presence of seawater. Excellent control of deposits: increases engine cleanliness and reliability and reduces oil consumption. Excellent resistance to thermal breakdown: provides lasting engine protection at extended oil change intervals, even in the most adverse operating conditions. High TBN value and excellent TBN value retention: protects all engine parts from corrosion wear over extended oil service intervals. ? High shear strength and high viscosity index: help maintain a strong lubricating film at all operating temperatures.