Patent ID: 11912955
Assignee: AFTON CHEMICAL CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. An engine lubricating oil composition providing improved low temperature valve train wear pursuant to the Sequence IVB engine test of ASTM D8350, the engine oil lubricating composition comprising:
one or more base oils of lubricating viscosity;
about 300 to about 1000 ppm molybdenum from an oil-soluble molybdenum compound;
one or more metal-containing detergents providing greater than about 5 TBN to the lubricating oil composition, wherein the TBN is measured using ASTM D4739;
wherein at least one of the one or more metal-containing detergents comprises an overbased magnesium detergent providing greater than about 2 TBN to the lubricating oil composition, wherein the TBN is measured using ASTM D4739;
less than about 0.2 weight percent of a polymeric pour point depressant;
wherein the engine oil composition has a viscosity grade according to SAE J 300 of 0W-8, 0W-12, 0W-16, or 0W-20; and
wherein a weight ratio of magnesium-to-molybdenum is about 0.8:1 or less.