Subaru Legacy BN/BS (2015-2019) Service Manual: Rear differential side oil seal

Inspection

Check the rear differential mount bushing for cracks, hardening or damage. If cracking, hardening or damage is excessive, replace rear differential mount bushing. ...

Replacement

1. Remove the rear differential. Rear Differential (T-type) > REMOVAL Rear Differential (VA-type) > REMOVAL2. Remove the rear differential side oil seal using a ST or screwdriver wrapped with vinyl ...

Other materials:

Inspection
1. Check that the front oxygen (A/F) sensor has no deformation, cracks or other damages.2. Measure the resistance between front oxygen (A/F) sensor terminals.Terminal No.Standard1 and 22.0+0.42 −0.2 - (when 20°C (68°F)) ...