Differential Gear Oil: Inspection

WARNING: This page is about a different car, the 2011 Subaru Tribeca. However, it is still accessible from the selected car via links, so may be relevant.

Remove the filler plug, and check the differential gear oil. Replace the gear oil if it is contaminated or deteriorated. Refer to REPLACEMENT , Differential Gear Oil.
Check that the gear oil level is within -5 mm (-0.2 in) from the bottom of the filler plug hole. If the level is low, verify that there is no oil leakage, refill up to the bottom of filler plug.

Fig 1: Identifying Filler Plug And Oil Drain Plug
Courtesy of SUBARU OF AMERICA, INC.