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利用ＨＡＡＫＥＲＯＴＯＶＩＳＣＯ ＲＶ２０ 型流变仪测试了６ 种ＣＤ级柴油机油和５ 种ＳＥ级汽油机油的粘温曲线，确定了它们在Ｖｏｇｅｌ和Ｗａｌｔｈｅｒ－ＡＳＴＭ 模型下的粘温关系． 研究结果表明：多级油的粘温性能优于单级油；在剪应变率小于６ ０００ ｓ－ １、温度低于１００ ℃的范围内，多级油并未表现出非牛顿特性．
The viscosity-temperature curves of 6 CD-grade diesel oils and 5 SE-grade gasoline oils were tested by HAAKEROTOVISCO RV20 rheometer to determine their viscosity-temperature relationship under the Vogel and Walther-ASTM models. The results show that the multi-grade oil has better viscosity-temperature performance than single-stage oil. In the range of shear strain rate less than 6 000 s-1 and temperature less than 100 ℃, multi-grade oil does not show non-Newtonian properties.