SING TORQUE+ SERIES, are fully-synthetic high performance 0n/0ff road diesel engine oil, it provides complete protection against corrosive wear, oxidative thickening, catalyst poisoning, and viscosity loss due to shear. It is specifically formulated to meet the requirement diesel engines equipped with after treatment devices such as Diesel Oxidation Catalyst and Diesel Particulate Filters as well as for previous model year diesel engines. Provides unsurpassed control of soot, protection of highly stressed piston rings and cylinder liners as well as exceptional protection of valve train systems used in modern diesel engines.