1. Remove the filler plug and gasket.
2. Check that the oil level is up to the lower edge of the oil filler plug hole.
3. Check that the oil is not excessively foul and has moderate viscosity.
4. If the oil level is not up to the lower edge of the oil filler plug hole, refill the specified oil to the bottom of the oil filler plug hole.Transfer oil: Mitsubishi Motors Genuine Super Hypoid Gear Oil API GL-5 SAE80
5. Install the filler plug and new gasket, and tighten to the specified torque.Tightening torque: 32 ± 2 N·m (24 ± 1 ft-lb)