Mobil Delvac 1300 Super 15W-40 is a heavy-duty diesel engine oil engineered for superior performance in the most demanding diesel engines out there. Ideal for both on- and off-highway use, this conventional engine oil results in a quieter, smoother engine, as well as longer engine and oil life in the most severe trucking conditions. Reduced engine deposits and sludge build-up keep engines running reliably, while superior soot-viscosity control bumps up engine efficiency. A great option for construction, mining, quarrying, and agricultural applications, Mobil Delvac 1300 Super keeps oil costs down while promoting more dependable engine performance. | Mobil Delvac 1300 Super 15W-40 Heavy-Duty Diesel Engine Oil | Size 5 gal