CJ-4 10W-40 is a synthetic-technology diesel engine oil in the SAE 10W-40 viscosity grade, formulated to API CJ-4. API defines CJ-4 for high-speed four-stroke diesel engines designed to meet 2010 model-year on-highway and Tier 4 non-road emission standards, and for earlier diesel engines.
The specification table publishes typical values from the product data sheet, each with its ASTM method: kinematic viscosity at 40 °C and 100 °C, cold-cranking viscosity, base number, Noack volatility and foaming tendency. Check those values and the API category against the engine manufacturer's requirement before ordering.
CJ4 Grade is a multigrade diesel engine oil for heavy-duty diesel engines, blended from fully synthetic base oil and an advanced additive package. Available grades: CJ4 10W40, CJ4 15W40. API defines CJ-4 for high-speed four-stroke diesel engines designed to meet 2010 model-year on-highway and Tier 4 non-road emission standards, and for earlier diesel engines.
Each grade is listed separately in the specification table with its viscosity at 100 °C, viscosity index, flash point, pour point, density and base number, so grades can be compared directly before ordering.
CK-4 10W-40 is a fully synthetic diesel engine oil in the SAE 10W-40 viscosity grade, formulated to API CK-4. API defines CK-4 for high-speed four-stroke diesel engines designed to meet 2017 model-year on-highway and Tier 4 non-road emission standards, and for earlier diesel engines.
The specification table publishes typical values from the product data sheet, each with its ASTM method: kinematic viscosity at 40 °C and 100 °C, cold-cranking viscosity, base number, Noack volatility and foaming tendency, plus viscosity after shear and copper corrosion. Check those values and the API category against the engine manufacturer's requirement before ordering.
