| abstract |
An object of the present invention is to provide a lubricating oil composition that is excellent in low friction, positioning, thermal stability, and low-temperature storage stability and that does not significantly deteriorate the initial low friction even when mixed with cutting fluid. Furthermore, a lubricating oil composition having excellent corrosion resistance is also provided. A lubricating base oil, and 0.01 to 0.5% by mass of a specific acidic phosphate ester based on the total amount of the composition, and (B) 0.01 to 2% by mass of a specific alkylamine. A lubricating oil composition containing a mixture and / or reactant and having an acid value derived from component (A) of 0.1 to 1.0 mgKOH / g. (C) It is preferable to further contain 0.01 to 5% by mass of a sulfur compound. [Selection figure] None |