| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cylinder lubricating oil for a crosshead type diesel engine in which, when a base oil having a lot of saturated components and less aromatic component is used, as a cylinder lubricating oil for a crosshead type diesel engine, heat resistance is improved more adding to conventional performances. <P>SOLUTION: The cylinder lubricating oil composition for the crosshead type diesel engine comprises: the lubricating base oil which has a viscosity index of 90 or more, 0.03 mass% or less of a sulfur content, and 90 mass% or more of a saturation component; 3-15 mass%, based on the composition total amount, of (A) a phenate based metal cleaning agent containing an alkylphenol sulfide metal salt which has five or more alkylphenol structures in the same molecule; and 1-8 mass%, based on the composition total amount, of (C) an ashless dispersant. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
