My daughter's 2013 Corolla has 197k miles on it. 1.8L 2ZR-FE. (What's up with the 2ZR-FE thing, anyway? I'm fairly new to Toyota. Why can't we just say 1.8L like every other manufacturer? It seems anywhere a Toyota engine is mentioned, there is always the code after it). Anyhow. It is burning, I think about one quart of oil in about 3k miles or so. I would like to change the PCV valve and am wondering if anyone has done so? Torque specs for the intake? Tightening sequence? Is there some sort of canister or baffle thing that the PCV valve mounts in that a person can clean and/or replace as well? What was so wrong about having PCV valves mounted in the valve cover? This car and my Fusion both have them behind the intake manifold. I've been using Valvoline FS HM 0W20 in it. I think that I am going to switch it to 5W30. But, I really want to change out this PCV too. Thanks in advance for any info.