| abstract |
[PROBLEMS] To provide a lubricating oil composition excellent in oxidation stability, base number maintenance, wear resistance, extreme pressure characteristics and corrosion resistance, particularly a low phosphorus low sulfur type lubricating oil composition suitable as a lubricating oil for an internal combustion engine. To provide. A lubricating oil containing (A) at least one selected from phosphonates and salts thereof and (B) at least one selected from a specific phosphate metal salt in a lubricating base oil. The said subject can be achieved with a composition. [Selection figure] None |