Thanks for the suggestion! I forgot to mention the oil cooler, that was actually one of the first things I replaced.

I haven't seen oil at the the bellhousing so I feel pretty good about the rear main. 143k and smooth as silk. Yes, with the engine running I would expect some change but I get none. I never noticed the aux pump until I was constantly working on the car. I dont know if I started paying more attention...

I've read all over the internet trying to find a solution, and I've exhausted everything I can find. I have a 03 XC90 T6 that had an undisclosed oil leak when purchased 3 yrs ago and I've been chasing it ever since. I've rebuilt both turbos (lines and fittings are dry), replaced the entire pcv syste...