A rapid development has been observed in the design and manufacturing of automobiles worldwide in the past few decades, and nowadays it is confronted with more challenges because of the requirement of saving energy and protecting the environment. Theoretically, this problem can be alleviated by further reducing automotive weight, optimizing driving configuration, and using the appropriate lubricants in a certain degree. All of these require that the bearings that support the operation of the automotive parts operate very well under the conditions of very high speed and high temperature. In most cases, lubricating grease is specifically capable for lubrication of the bearings. However, because of the limited space in rolling element bearings, lubrication technology is a key factor for improving the performance of automotive components [1,2].