abstract |
(57) [Summary] [PROBLEMS] To increase the friction coefficient between metals in a metal belt, In addition, to provide a lubricating oil with a long anti-shudder life. The lubricating base oil contains (a) an alkaline earth metal sulfonate or finate, (b) an imide compound and (c) a phosphorus compound, and has a friction coefficient between metals of 0.13 or more in a block-on-disk test. And JAS A lubricating oil composition characterized in that the anti-shudder life due to low-speed sliding specified in OM349-95 is 150 hours or more. |