| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricant composition for a non-stage transmission in which viscosity necessary for a lubricant composition is maintained through a period in which a device is used even though being low viscosity, a high intermetallic friction coefficient is maintained, thereby high power transmission force is possessed, and a frictional property and shudder prevention of a wet type clutch necessary for a change gear are possessed, a further fuel consumption saving property is attained by a low traction coefficient.SOLUTION: A lubricant composition for a non-stage transmission is characterized as follows. In a base oil in which a product (EC×V40) of weight percent (EC( weight%)) of a saturated cyclic component and 40°C kinematic viscosity (V40(mm/s)) in a base oil total amount base is at most 500, and a 100°C kinematic viscosity is adjusted to be 3.6-4.1 mm/s; (B) a phosphorus compound, (C) calcium salicylate and/or calcium sulfonate, (D) a boron modified ashless dispersant, and (E) a friction modifier are included by respective specific amounts, a kinematic viscosity at 100°C of the lubricant composition is 5.2-5.6 mm/s, and a viscosity index is at least 165. |
