Part Description: 22Lt/5.8gal KLONDIKE SAE 15W-40 CK-4 Synthetic Blend Heavy Duty Engine Oil is specifically engineered for engines operating under severe service in a wide range of climatic conditions and ambient temperatures. An ideal mixed fleet engine oil designed for naturally aspirated and turbocharged heavy duty diesel engines in mobile and stationary equipment where the API CK-4 service category and SAE 15W-40 viscosity grade is specified. Advanced API CK-4 additive technology is fully backwards compatible with, and replaces, service categories CJ-4, CI-4 Plus, and previous. KLONDIKE SAE 15W-40 CK-4 Synthetic Blend Heavy Duty Engine Oil also meets the requirements of AllisonĀ® C-4 and Caterpillar TO-2 for use in transmissions requiring a fluid of this type. 22Lt/5.8gal KLONDIKE SAE 15W-40 CK-4 Synthetic Blend Heavy Duty Engine Oil is designed specifically to meet the stringent requirements of API Service Category CK-4 for heavy duty diesel engines running on Ultra Low Sulfur Diesel (ULSD) and equipped with advanced after treatment devices.