Vibrating after front/rear seals replaced?

After my 1998 Subaru Outback had its front and rear seals replaced the car vibrates and is running rough. It was smooth and quiet before…my mechanic agrees something isn’t right but he can’t figure out what went wrong. Any ideas?

every one has problems with subaru . are all you going to the same dealer

Rotate the wheels front to back and see if that changes things. If so it is one or more wheels/tyres.

Front and rear WHAT seals?


Wheel bearings?


More info, please.