Mobil SuperTM Diesel TM CI-4 Plus 15W-40 is a high performance diesel engine oil that helps extend engine life in severe on and off highway applications. The advanced chemistry of this product delivers outstanding performance in modern, high-output engines including those with Exhaust Gas Recirculation (EGR), and also older engines. Mobil Super Diesel TM CI-4 Plus 15W-40 meets the requirements of the API CI-4 PLUS service category and is approved by Tata Motors under their TSS 6576 specification.Mobil Super Diesel TM CI-4 Plus 15W-40 is recommended for use in a wide range of heavy duty applications and operating environments found in the trucking, mining, construction, quarrying and agricultural industries. The outstanding performance reserve of Mobil Super Diesel TM CI-4 Plus 15W-40 is the result of extensive cooperative development work with Tata Motors. As a result this product provides excellent control of oil thickening due to soot build-up and exposure to higher temperatures together with outstanding resistance to oxidation, corrosion, wear, and high temperature deposits.