| abstract |
In the field of lubricating oil for assembly of machines, no damage occurs when the machine is idling, has a low coefficient of friction, has rust prevention performance, and causes sludge when mixed with the used lubricating oil. To provide a lubricating oil composition for difficult assembly of machines. A lubricating oil composition for assembly of a machine comprising (A) a viscosity index improver and (B) a rust inhibitor and having a kinematic viscosity at 40 ° C. of 1500 to 7000 mm 2 / s. . [Selection figure] None |