Lubricating oil compositions

摘要

A composition comprises an oil of lubricating viscosity in a concentrate-forming or major amount; and, as an additive component, an oil-soluble or oil dispersible mononuclear molybdenum compound comprising molybdenum and bonded thereto one or more diazenide ligands and one or more hydrocarbyl group-carrying ligands, other than diazenide ligands, the hydrocarbyl groups conferring oil-solubility or oil-dispersibility on the molybdenum compound.