Well done. I would consider the same if I lived in a moderate climate, didn't drive a lot, or had an older vehicle.
As it is, it will be 5 quarts Amsoil OE 0w20 and a genuine Subaru filter shortly, at $4.40 a quart and $6 for the filter for $28. Not too bad.
Now on the Wrangler it will get a little snobby, with 4 1/2 quarts Amsoil 0w30 SS and Amsoil filter, total around $48. Once a year though.