The Mobil Delvac MX 15W-40 is an extra high performance diesel engine oil that delivers excellent lubrication in modern diesel engines and contributes to long engine life. The result is that this product meets or exceeds almost all the requirements of major European and American engine manufacturers. The extra high performance of the product has been documented during use in a variety of industries, in different applications and in mixed fleets. It has an advanced chemical composition that provides outstanding performance in both modern, low-emission diesel engines as well as in older engines running on low or high sulfur diesel. The Mobil Delvac MX 15W-40 combines high performance base oils with a balanced additive system to provide good control of oil thickening caused by soot formation and high temperatures, as well as outstanding oxidation resistance, high temperature corrosion deposits.