LITTLE SHARK GEEKER CK-4 is belongs to top synthetic engine oil, designed to meet the highest standards in heavy duty diesel engines. Its advanced formula is designed to comply with the most leading European auto makers in the latest engine lubrication requirements, such as Mercedes Benz, Volvo, Man, and Volkswagen. It can show the unique cleaning performance and clay dispersion performance even under the condition of much sludge and carbon deposition, extend the oil change period. At the same time, it can provide comprehensive protection for high performance diesel engine, save fuel and reduce maintenance costs.