subaray

Der friend, Since you aready said that is your first rear main seal servive you've done, I would suggest you to check that rear main seal again, what happend is if you did not check that main seal very close.. and the seal had the internal lip not seated properly you will have the same kind of leak before or greater. Sorry, but this is the only thing I can possibly guess. But I suggest you to clean that area very good and roadtest your subaru again and check how bad it is, Rear main seal not properly installed will give you a bad leak.