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      1. 如何选定汽油发动机润滑油质量档次?
        发布时间:2018-04-28

        答:主要依据汽油发动机压缩比,曲轴箱是否装有正压通风装置,是否有废气再循环装置及尾气催化转换。通常,压缩比在7.5左右的解放与东风汽车选用SD、SE级汽油机油即可,压缩比在8~9的轿车应选用SF、SG级汽油机油,压缩比在9~10以上的轿车要选用SH、SJ、SL级的汽油机油。高级轿车选用汽油机油要求较高,而且严格,换油期不宜过长,10000公里左右即可换油,这样做有利保护发动机,延长发动机寿命,降低汽车维修费用,从经济上看,是十分合算的。