Transmission oil TEP-15

TEP-15 oil (GOST 23652-79) is produced on the basis of aromatized residual products and distillates. The functional properties of the oil are improved due to antiwear and depressant additives. It is used as an all-season transmission oil for tractors and other agricultural machinery in temperate climate region. The operating temperature range of TEP-15 oil is from -20 to + 100°С.

Physical and chemical indicators of Transmission oil TEP-15 (GOST 23652-79)

Name of the indicator Norm GOST (TС)
Kinematic viscosity, mm2/s:
at 50°С -
at 100°С 15,0 ± 1
Dynamic viscosity, PA, at -15 (-20)°С, not more than 200
Viscosity index, not less than -
Temperature, °С:
flash point in the open crucible, not less than 185
pour point, °C, not more than -18
Acid number, mg KOH/g, not more than -
Mass fraction, %:
mechanical impurities, not more than 0,03
water Traces
sulfur ≤ 3,0
phosphorus, not less than 0,06
water-soluble acids and alkalis Absence
Corrosion test on plates within 3 h:
steel and copper at 100°С Withstands
copper at 120°С, not more than -
Ash,  % ≥ 0,3
Acid number, mg KOH/g, not more than -
Stability on the device DK-NAMI (140°С, 20 h):
Change in kinematic viscosity at 100°С, not more than 25,0
The rate of sediment in petroleum ether, not more than 0,7
The tendency to foaming cm3, not more than:
at 24°С -
at 94°С -
at 24°С after testing at 94°С -
Tribological characteristics on ChShMT:
scuff index, N, not less than -
wear index at axial load 392N, (20±5°С), 1 h, mm, not more than 0,55
Welding loading, N, not less than -
Colour, units of CNT, not more than -
Density at 20°C kg/m3, not more than 950