HPR Diesel 5 is a premium high performance semi synthetic SAE 5W-40, non-friction modified engine oil. It features a DOUBLE LAYER of engine wear protection with FULL ZINC and Penrite's advanced EXTRA TEN technology. It contains a combination of high technology additives, including increased dispersant levels and low shear viscosity modifiers. It protects against corrosion, oil oxidation and sludge under all operating conditions. HPR Diesel 5 meets the requirements of API CI-4 PLUS/SL as well as many manufacturers' requirements.