GEAR GL-4 80W90


This is a gear oil for mechanical transmissions with moderate "extreme pressure" characteristics and is specifically developed to avoid corrosion of copper alloys.


Performance level

  • API: GL-4
  • MIL: MIL-L-2105


It is suitable for the lubrication of syncromesh gearboxes, transfer boxes, mechanical steering controls and most rear axles (certain rear axles should be run in with a GL5 oil).


  Unit Average Value
Density at 15°C kg/l 0.890
Viscosity 40°C mm²/s 150.50
Viscosity 100°C mm²/s 15.20
Viscosity -30°C mPas
Viscosity index 102
Flash point COC °C 214
Pour point °C -27

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