Valve cover leak sanity check

Hi all,

I'm now the proud owner of my first valve cover leak on a 07 1GR-FE and I’m planning to fix it myself. In the attached images you can see the driver side valve cover looking great no leaks, but the passenger side shows plenty of oil creeping. Honestly, I have been putting this off since the leak has not affected oil levels between regular maintenance oil changes and the car runs great.




So far so good, I know this is quite common for these engines and I'm ordering the parts to repair both sides as well as a few other seals along the way.
The sanity check is needed after I saw a small oil spill on the floor beneath the car for the first time and got under it. I was surprised by the amount of oil on the driveshaft, skid and other components. I also attached a few pictures from underneath.

Can a valve cover leak accumulate this much oil that spreads out this far? Are there any other places I need to check? I cant see any obvious leaks besides the valve cover from the bay. The lower oil pan looks good (see picture). Rear main seal? I appreciate any advise as to how to debug this and If someone has had a similar experience.

Cheers!

 

Rear seal I would definitely check. Also while you are in there the timing cover. The timing cover also goes on the 1GR-FE

 

Does that engine havevthe half moon seals on the backnofvtge head you cant see? Because dealer replaced my gaskets without doing thosevthen hadvto do those.

 

It was like $800. and they did sonething to the exhaust manifold.

 

Thank you, I'll definitely check the timing cover as well. Am I missing something or does the 1GR-FE not have the halve moons? I know you should apply some RTV where the block meets the timing cover but haven't read anything about half moons in that engine?

 

Rear main seal, or possibly over-lubing the drive shafts and it's slinging it around.

 

Good thought, everything above that front U-Joint looks to be pretty clean, everything below it looks to be pretty dirty.