I remember my new Subaru... 1992 SVX. Last new car we bought.
Talked into the refundable $1,100, 100% Extended Warranty (7 yrs./100,00 miles) which was refunded, the Lifetime Oil & Filter Change (for $29.95) and got about 35 free 3K oil changes. They used synthetic oil at the Acura dealership (which was on our side of the river) operated by the same owner who extended the courtesy. They must have considered it almost an exotic car, like their NSX, I guess. Almost put 8 quarts in it by mistake, once.
Used same-brand synthetic and dyno 50-50% "blend" for 5 years, then went to 10W-30 dino when Chevron Supreme was $0.49 after rebate. $5 for oil & filter.
No mechanical engine repairs, unless you consider a blown crank pully an "engine repair": nothing ever lubrication-related. Replaced leaking valve cover gaskets. Seals, a few O-rings.
I now use $0.99 synthetic (PP or Syntec) for 6K and it never seems as "golden" as the dino did. Good thing I have those cases of Havoline, Chevron Supreme, 76 Super dino on my shelf.
Any quality 5-10-15W - 20-30-40 SM/GF-4 oil and filter change will keep your Subaru in great shape. Every time you change your oil you get to look at the bottom of your car and some of what is going on inside your engine: change your tranny fluid and filter early, while you are at it.
Enjoy!