Low Viscosity Diesel Engine Oil Composition for Improving Fuel Economy

摘要

PURPOSE: A low viscosity diesel engine oil composition capable of improving fuel efficiency is provided to offer improved abrasion resistance and oxidation stability of the composition to users. CONSTITUTION: A low viscosity diesel engine oil composition contains 2-25wt% of polymethylacrylate, 0.05-5wt% of zinc alkyldithiophosfate, 0.5-2wt% of molybdenum dithiocarbamate, 0.05-1wt% of hindered phenol based antioxidant, and 70-90wt% of highly distilled base oil. The molecular weight of the polymethylacrylate is 100,000-150,000. The molybdenum dithiocarbamate contains an alkyl group with 8-13 carbons, and has the molybdenum content of 8-15%. The viscosity of the highly distilled base oil is greater than 120.