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Valvoline’s Premium Blue SAE 15W-40 engine oil exceeds the requirements of the American Petroleum Institute (API) Service Category CJ-4 specification for use in high-speed four-stroke cycle diesel engines designed to meet 2007 model year on-highway exhaust emissions. The new formulation will be backwards compatible and meet the requirements of API CI-4 Plus and CI-4 categories. Premium Blue engine oil is designed to provide advanced lubricant performance in modern emissions treatment equipped with sophisticated emissions control hardware, including all types of exhaust gas recirculation, diesel particulate filters and Caterpillar ACERT technology.