| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricant composition for a stepless transmission making a high friction coefficient between metals required for belt type CVT oil and a shudder-preventing property to a slip control mechanism compatible with each other.SOLUTION: In the lubricant composition for the push belt type automatic stepless transmission obtained by compounding a metal salt of an organic acid (A), an abrasion inhibitor (B) and boron-containing succinimide (C) in lubricant base oil composed of mineral oil and/or synthetic oil, the metal salt of the organic acid (A) is sulfonate or phenate of Ca, Mg or Ba having at least one chain hydrocarbon group, linearity of the alkyl group in the chain hydrocarbon group obtained by a carbon nuclear magnetic resonance measurement (C-NMR) is 25 to 60%, and the abrasion inhibitor (B) is acidic phosphate or zinc dialkyldithio phosphate. |
