Mobil Delvac 1300 Super 15W-40 is a synthetic blend diesel engine oil that helps extend engine life, allowing you to run your business with confidence. This oil meets or exceeds original equipment manufacturer (OEM) requirements and deliver high-performance in both on-and off-highway applications. Fully backward compatible, Mobil Delvac 1300 Super 15W-40 engine oil delivers high-performance in both newer and older heavy-duty engines. Developed in close collaboration with OEMs, Mobil Delvac 1300 Super 15W-40 engine oil is recommended for use in a wide range of heavy-duty applications and operating environments in the trucking, mining, construction, agricultural and marine industries. Accordingly, this oil also meets or exceeds the requirements of API CK-4, CJ-4, CI-4 PLUS, CI-4 and CH-4 service categories, as well as key OEM requirements. Mobil Delvac 1300 Super 15W-40 engine oil is universal, meaning it may also be used in gasoline engines requiring the API SN specification.