一种排气净化、高氧化稳定性曲轴箱润滑油配方，是用基本原料制备的，所述基本原料含有至少一种选自以下物质的合成酯：多元醇酯、具有按多元醇中的羟基总量计５％～３５％未转化羟基的合成酯和与至少一个其它官能团化合的合成酯；所述的官能团可增加官能化合成酯的极性，... An exhaust gas purification, high oxidation stability crankcase lubricating oil formulation is prepared from a base stock containing at least one synthetic ester selected from the group consisting of polyol esters having hydroxyl groups in the polyol Synthetic esters of 5% to 35% of the total amount of unconverted hydroxyl groups and synthetic esters combined with at least one other functional group, which may increase the polarity of the functionalized synthetic ester ...