1. Park the vehicle on level ground for approx. 5 min to stabilize the differential oil.
2. Remove the oil-fill plug and the washer.
3. Inspect if the oil level is close to the rim of the oil-fill plug hole.
4. If the oil level is lower than approx. 12 mm {0.47 in} from the lower end of the oil-fill plug hole, inspect for oil leakage and add the specified oil.
5. Install the oil-fill plug with a new washer and tighten.