| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lubricating oil composition stable against oxidation and usage of it. <P>SOLUTION: The lubricating oil composition is contaminated with at least about 0.3 wt.% of a biodiesel fuel or its decomposition product based on the total weight of the lubricating oil composition. The lubricating oil composition comprises (a) a major amount of base oil of lubricating viscosity and (b) a diarylamine compound, wherein the amount of the diarylamine compound is at least about 0.1 wt.% based on the total weight of the lubricating oil composition. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
