TSp-15K (TM-3-18 API GL-3) is designed for the lubrication of heavy-duty cylindrical, bevel and spiral-bevel gears of KAMAZ heavy trucks and other vehicles. It is functional at temperatures from minus 20 °С to plus 130 °С, corresponds to SAE 90 viscosity. It has high extreme pressure qualities and antiwear properties. Its unique anti-corrosion properties protect transmission parts from corrosion. The antifoam additives present in it prevent the foaming in the operating unit.