The suitability of a new fuel can be assessed by comparing its profile with existing fuels in the library. Here we propose to use the same reasoning to develop a regression model for the physicochemical properties of the fuel.Determination of the physico-chemical properties of oxygen compounds of oil and petroleum products, and determination of the negative or positive effect of properties on the processes in practice is the direction of dolbzar. In this scientific study, the physicochemical properties of Petroleum acids were studied.

The purpose of the study is to increase the efficiency of using used engine oils as a dispersion medium for plastic lubricants. It has been established that the removal of resins, carbenes, carbides and asphaltenes from used synthetic motor oils makes it possible to obtain an oil base close to commercial base oils in terms of basic characteristics; refined oils also have a high margin of operational properties. The composition of lubricants for analogues of Lithol-24 and Solid oil-Zh based on refined used engine oils has been determined. Anticorrosive, adhesive and strength properties of lubricant compositions are considered.