| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricating oil composition excellent in friction reduction effect and fuel saving property.SOLUTION: There is provided the lubricating oil composition which contains a lubricating oil base oil (A), a molybdenum compound (B) and an ashless friction modifier (C), and in which: a binuclear organic molybdenum compound represented by the following formula (I) is contained as the molybdenum compound (B) and the content of the binuclear organic molybdenum compound in terms of the molybdenum atom is 0.030 mass% to 0.140 mass% based on the total amount of the lubricating oil composition; and an ester-based ashless friction modifier (C1) and/or an amine-based ashless friction modifier (C2) are contained as the ashless friction modifier (C) and the total content of the ester-based ashless friction modifier (C1) and/or the amine-based ashless friction modifier (C2) is over 0.1 mass% and 1.8 mass% or less based on the total amount of the lubricating oil composition. ( in the formula (I), Rto Rrepresent hydrocarbon group having 4 to 22 carbon atoms, Rto Rare same or different and Xto Xrepresent a sulfur atom or an oxygen atom.SELECTED DRAWING: None |
