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比较了溶剂精制油、加氢油和合成油所调制的轿车用发动机油（ＰＣＭＯ）各项性能。结果证明，由加氢油调制的ＰＣＭＯ能满足最新规格的各项要求，加氢油是基础油中的最佳选择。
The properties of engine oil for passenger car (PCMO) prepared by solvent refined oil, hydrogenated oil and synthetic oil were compared. The results show that the PCMO prepared from hydrogenated oil to meet the requirements of the latest specifications, hydrogenated oil is the best choice in the base oil.