The PCV valve wasn’t on the dealership’s list but one of the youtuber’s that I stumbled on while learning how to do all of the maintenance, MrSubaru1387 (https://www.youtube.com/@MrSubaru1387), flagged it as an easy and important item to swap at this mileage. It’s a $15 part and a few minutes of work.
I remember replacing this on my Prelude back in the day.
Here is the pdf guide I made.