Long-term lubrication by grease is an important problem with respect to effective use of natural resources and extending the life of machines. The solution to this problem is extension of the grease life. Heat and shear result in deterioration of grease by one of two deterioration types. The first type is where the grease becomes soft and flows out of the lubrication area, while the second is where the grease solidifies and can no longer supply oil to the lubrication area. Long-term lubrication grease therefore must have high heat resistance and shear stability.