Give your diesel engine the protection it deserves when you use Mobil Delvac 15W-40 Heavy Duty Diesel Oil. The quality and reliability built into Mobil Delvac Elite 15W-40, as a CJ-4 oil, delivers the highest level of protection in both new diesel engines, as well as older models.Â

Give your diesel engine the protection it deserves when you use Mobil Delvac 15W-40 Heavy Duty Diesel Oil. The quality and reliability built into Mobil Delvac Elite 15W-40, as a CJ-4 oil, delivers the highest level of protection in both new diesel engines, as well as older models. The 2.5-gallon Mobil Delvac oil package has oxidation performance superior to most conventional oil. You get excellent anti-wear and anti-scuff properties. This diesel engine oil offers excellent low-temperature performance that allows oil to flow to critical bearing surfaces at start-up and controls sludge formation in stop-and-go service. Make Mobil Delvac Elite your diesel engine's first choice.Â