Mobil Mobil Delvac 15W-40 Heavy Duty Diesel Oil, 2.5gal: * Oxidation performance superior to most conventional oils * Excellent anti-wear and anti-scuff properties * Extended drains beyond conventional oils * Excellent low-temperature performance allows oil flow to critical bearing surfaces at start-up and controls low-temperature sludge formation in stop-and-go service * Stay-in-grade shear stability protects engine parts at high operating temperatures and reduces oil consumption