The first tank I didn't know better and put 87 in. (I'm not the biggest "car guy") After reading, I've put 92 in ever since.
It sounds like I'm getting pretty typical mileage for the car but I may still replace the PCV value if it's that cheap.
Also, I had the battery need replaced (battery died). The really odd thing was that the trip odometer mileage was kept but the oil life indicator was reset to 100% life. Should I really trust it? (It went from maybe 72% back to 100%)