摘要
介绍了我国自己开发的通用多级内燃机油系列产品的品种、质量和使用性能；指出了该产品的应用前景和经济效益。
? The article introduces varieties, quality and properties of product series of common multigrade internal combustion engine oils developed by our country and points out their application prospect and economic benefits.
关键词
内燃机油
质量
性能
汽车工业
multigrade internal combustion engine oil
variety
quality
property
application
economic benefits
