The results of a study of the tribological properties of extracts -by-products of selective treatment of different oil distillates - and their effect on the same properties of greases prepared from these extracts are reported. Due to the high content of aromatic polycyclic and heterocyclic compounds, as well as resins and asphaltenes, which are natural antiwear components, the greases made from the extracts have performance properties equal to those of plastic greases made from classic oil mixtures, and their production is economically more advantageous.