| 摘要 |
An internal combustion engine crankcase lubricating oil composition having a sulphated ash content of no greater than 1.2 mass%, based on the mass of the lubricating oil composition, and a phosphorous content of no greater than 0.1 mass%, based on the mass of the lubricating oil composition, which lubricating oil composition comprises or is made by admixing:
(A) a crankcase base oil of lubricating viscosity, in a major amount; and
(B) the following additives, in respective minor amounts:
(B1) a polymeric friction modifier being the reaction product of
(a) a functionalised polyolefin,
(b) a polyether,
(c) a polyol, and
(d) a monocarboxylic acid chain terminating group; and
(B2) at least one oil-soluble molybdenum compound. |
