A smart and inexpensive method of enhancing the informative content for estimation of the performance properties level of new and modernized fuels and lubricants is proposed. It ensures the quantitative generalized (integral) expression and comparison of the potential propensity of fuels and lubricants for transformations coming out in different ways depending on the operation conditions and the engineering construction. The examples of advantages of the new method are provided when estimating the properties of diesel fuels and gasoline. Application of the suggested method will allow the expenses reduction of feasibility study of the requirements for performance properties of the new and modernized fuels and lubricants and will enhance the effectiveness of the solutions intended for their application in future engineering.