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介绍了ＳＣ、ＳＤ汽油机油复合剂的研制过程和评定结果。该复合剂采用磺酸盐型配方，按不同比例调合成ＳＣ、ＳＤ汽油机油，全部理化指标均达到技术要求，并通过了发动机试验，完全满足ＳＣ、ＳＤ汽油机油的使用要求。
The development process and evaluation results of SC, SD gasoline engine oil compound are introduced. The compounding agent adopts sulfonate type formula and is mixed into SC and SD gasoline engine oil according to different proportions. All the physical and chemical indexes meet the technical requirements and passed the engine test to fully meet the requirements of SC and SD gasoline engine oil.