Getting back to the OP's question, for which he's never responded and has probably long forgotten.. LOL.
I've never seen, or heard of a real high mileage 3.6L, 5spd auto equipped Subaru product. Maybe they're there, but I would think it's rare. Not that this combo is bad, it's just larger, more complex, with much fewer on the road.
Like everyone has said, by and large, Subaru has made some long lasting, reliable vehicles. Things are changing a bit today IMO, now that Soob is jumping on the 'lets change everything up every ~2yrs' bandwagon.
There's some very unhappy ~2012+ FB20 owners out there these days with the crazy 0w20 oil consumption. Subaru has been trying some band-aids like over-filling the sumps and lowering the max OCI interval from 7500mi to 6000 to make this problem seem not so much like a problem.
I know even I was shocked when the low oil level light lit up on my new 2014 XV Crosstrek when it had ~1300 miles on the ODO. I added a qt, but it could have taken more. Since then, it uses some between ~6-7K OCIs, but no more than a qt or just over.
To me, it's not a 0w20 engine.