Mobil Delvac 1 5W-40 is a fully synthetic, high-performance heavy-duty diesel engine oil that helps extend engine life while providing long drain capability for modern diesel engines operating in severe applications. Mobil Delvac 1 5W-40 delivers chaplain performance in modern low-emission engines, including refrigeration units, as well as older, well-maintained engines. Mobil Delvac 1 5W-40 is recommended for use in a wide range of heavy-duty applications and operating environments found in the trucking, mining, construction, quarrying, and agricultural industries. Mobil Delvac 1 also meets the requirements of the API SL specification for gasoline engines used in mixed fleets. The excellent performance of Mobil Delvac 1 5W-40 is the result of extensive cooperative development work with major original equipment manufacturers and the application of advanced lubrication technology. Consequently, this product meets or exceeds the requirements of the latest API, ACEA, JASO, and global industry specifications for diesel engine oils, as well as the requirements of many major American, European, and Japanese engine manufacturers.

Grade SAE 5W-40 - Sulfated Ash, wt%, ASTM D874 1.35 - Density at 15 °C, kg/l, ASTM D4052 0.854 - Flash Point, Cleveland Open Cup, °C, ASTM D92 226 - Kinematic Viscosity at 100 °C, mm2/s, ASTM D445 14.8 - Kinematic Viscosity at 40 °C, mm2/s, ASTM D445 102 - Pour Point, ºC, ASTM D97 -45 - Total Base Number, mg KOH/g, ASTM D2896 12 - Viscosity Index, ASTM D2270 151