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:

Installing a rearward facing child restraint
Place the child restraint system in the rear seating position.  Run the lap and shoulder belt through or around the child restraint system following the instructions provided by its manufacturer.  Insert the tongue plate into the buckle until you hear a click. ...