Synthetic High Performance Heavy Duty Diesel Engine Oil
Mobil Delvac 1 ESP 0W-40 is a synthetic, high, performance, heavy duty diesel engine oil that helps extend engine life and improve fuel economy in modern diesel engines operating in severe applications.
Mobil Delvac 1 ESP 0W-40 meets the API CJ-4 specification utilizing state-of-the-art technology to deliver exceptional performance in modern low emission engines, including those with Exhaust Gas Recirculation (EGR) and After Treatment systems with Diesel Particulate Filters (DPF’s) and Diesel Oxidation Catalysts (DOC’s). It can also be used in refrigeration units and older, well-maintained engines. Mobil Delvac 1 ESP 0W-40 is recommended for use in a wide range of heavy-duty applications and operating environments found in the on-road transport and offroad mining, forestry, construction, and agricultural industries. Mobil Delvac 1 ESP 0W-40 also meets the API SM specification for gasoline engines.
Many modern, low emission diesel engines generate more soot and operate at higher temperatures than older engines. This significantly increases the need for high performance lubricants. In addition, new engines (model-year 2007 and beyond) come equipped with After Treatment devices installed in the engine exhaust stream which will require the use of both API CJ-4 oils and ultralow sulfur diesel fuel to function properly. Further, new engines using EGR will generate even higher levels of acid, soot and heat than older EGR engines due to substantially increased EGR rates compared to previous EGR designs. Top piston rings are located higher, bringing the oil film closer to the combustion area and exposing the lubricant to severe thermal stresses.