The PS 27712 (left) was put on during my recent HG job. I bet it's fine for the 3750 mile OCI recommended by Subaru. I would never run this filter by choice... to little media, too thin, adbv was stiff.
Replaced it with a new XG7317 (right) and AFE.
Replaced it with a new XG7317 (right) and AFE.