Abstract.1 Physico-chemical properties and group composition of the virgin and used M-10DM motor oil for diesel engines were studied. IR-spectroscopy and derivatography were used for investigation. By means of X-ray fluorescence the composition of inorganic part was determined. Change in properties and composition of M-10DM before and after using are discussed.
The main methods of regeneration of used mineral motor oils, in particular physical, chemical, physicochemical methods are considered. The functional-cost analysis of methods of regeneration of the used mineral motor oils by means of branch experts is carried out. Functional-cost analysis is a method of pairwise comparisons and involves the process of ranking the selected characteristics according to the degree of importance (weight). To do this, each characteristic is assigned a certain index. As a result of the functional-cost analysis, the expediency of using technologies of vacuum distillation and hydrocracking of used oils in the processes of regeneration of used oils has been established.
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