| 摘要 |
The present invention provide a lubricant composition comprising a lubricant base oil, wherein said lubricant composition contains 0.08% by mass or less of zinc dithiophosphate or no zinc dithiophosphate as phosphorus amount for total amount of said lubricant composition, contacts metallic materials containing lead, and contains at least a kind of additive selected from a group consisting of following (A) ~ (D) :
(A) organomolybdenum compounds (except molybdenum dithiophosphate);
(B) borate ester and/or derivatives thereof;
(C) organomolybdenum compounds, and borate ester and/or derivatives thereof; and
(D) organomolybdenum compounds, and borated alkyl or alkenyl succinimide.
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