Formulated for high speed and four-stroke diesel engines which a service category of CJ-4 plus. The oils are compounded for use in all applications with diesel fuels with sulfur content ranging up to 0.05% by weight. These oils are especially effective at sustaining engine durability where exhaust emission componentry may be used. Provides protection against wear, corrosion, low/high-temperature stability, piston deposit control, soot handling properties and viscosity loss due to shear, and can be used for lower service category engines.