Puma Diesel Engine Oils are high quality multi-grade long drain lubricating oils, primarily manufactured from highly refined base oils. HD Plus 15W-40 is specially developed for use in all types of for high output normally-aspirated and turbocharged diesel engines with EGR (Exhaust Gas Recirculation) operating under very severe duty or which are subject to deposit formation or excessive wear due to design characteristics. These oils are formulated from selected base stocks with high Viscosity Index and Low Pour Point. They are treated with a large percentage of additives to impart superior detergency together with high dispersant, anti-oxidant, anti-corrosion, anti-wear and anti-foam properties. It can also be used in engines requiring quality levels API CI-4+, CG-4, CH-4, CF, and CF-4.