Differential Gear Oil: Inspection

Lift up the vehicle.
Remove the filler plug, and then check the gear oil. Replace the gear oil if it is contaminated, deteriorated or cloudy. Refer to REPLACEMENT .
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, make sure that there is no oil leakage and refill up to the bottom of filler plug hole.
NOTE: On VA1-types at factory settings, the oil level may be within -14 mm (-0.6 in) from the bottom of the filler plug. This is at normal level, requiring no oil refill.
- T-type
  
  Fig 1: Identifying Filler Plug (T-Type)
  Courtesy of SUBARU OF AMERICA, INC.
- VA1-type
  
  Fig 2: Identifying Filler Plug (VA1-Type)
  Courtesy of SUBARU OF AMERICA, INC.
- VA2-type
  
  Fig 3: Identifying Filler Plug (VA2-Type)
  Courtesy of SUBARU OF AMERICA, INC.
Install the filler plug.
NOTE:
- For the T-type, apply liquid gasket to the filler plug.
Liquid gasket:

THREE BOND 1105 (Part No. 004403010) or equivalent
- For VA type, use a new gasket.
Tightening torque:

T-type:

49 N.m (5.0 kgf-m, 36.1 ft-lb)

VA-type:

50 N.m (5.1 kgf-m, 36.9 ft-lb)