LUBRICATING OIL COMPOSITION FOR IMPROVED OXIDATION, VISCOSITY INCREASE, OIL CONSUMPTION, AND PISTON DEPOSIT CONTROL

摘要

An engine oil lubricant composition having improved control of oxidation viscosity, and piston deposits is provided. The composition further exhibits performance on the ASTM Sequence IIIG Test of about 90% or less kinematic viscosity increase at 40° C. and about 5.5 or more merits average weighted piston deposits. The composition meets or exceeds the standards of both the ILSAC GF-4 and the General Motors GM4718M specifications.