1. Remove the filler plug and gasket.
2. Check that the oil level is not 18 mm (0.7 inch) below the bottom 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 in between the upper limit and the lower limit, refill the specified oil to the bottom of the oil filler plug hole.Brand name: Mitsubishi Motors Genuine super hypoid gear oil API classification GL-5 SAE 80
5. Install the filler plug and new gasket, and tighten to the specified torque.Tightening torque: 32 ± 2 N·m (24 ± 1 ft-lb)