The effects of base oil and viscosity index improver on high temperature detergency of lube oils were studied by the test method of coke forming plate or paint forming plate.

• 用成焦板(或成漆板)试验法考察了基础油及粘度指数改进剂对润滑油高温清净性的影响。结果表明,基础油的粘度和粘度指数改进剂对油品的高温清净性有很大影响;