Axles with spiral bevel gears operating under moderate to severe conditions of speed and load or axles with hypoid gears operating under moderate speeds and loads. EP additives used.
Gears, particularly hypoid gears in axles operating under various combinations of highspeed shock loads and low-speed, high torque conditions. Higher amount of EP additivation than GL-4.
Choosing the right classification is extremely important since they both have different properties and wrongful use could lead to serious damage to your vehicle.