Oil in air intake pipe

[MikeB63]

While replacing the thermostat on my 07 9-5 2.3t this weekend, I removed the air intake pipe for better access and noticed a grimy build-up around the by-pass charge and noticed an oil film (clean) in the pipe from the turbo. I also have noticed that it appears that I have oil coming up the oil fill pipe as there seems to be oil coating the ring around the fill pipe that dip stick cap meets when inserted. I had to replace the tube from the turbo to the oil trap last year when I broke it trying to remove it (the one with the check valve in it). I've added a pic for clarification. Any suggestions as to what this indicates or what I should look for as a culprit? Is this an indication of possible doom? It seems to run fine. This is not my engine by the way. Just a stock pic used for illustration.

[nordwulf]

How many miles on the car? The turbos on these 2.3T engines usually last a long time but eventually the seals may go bad. But that usually shows up as oil in the intake tube and smoke from the exhaust.

But it is a 15 year old car and I never had a 9-5 of that age.

[MikeB63]

Just about to turn 159K. I don't notice smoke in the exhaust though. I'll have to keep an eye out for that.

[GeoffR]

Sounds as though the crank case is being pressurised, worth checking the vacuum hoses and NRVs for blockages. Also check the bypass valve doesn't leak.

[MikeB63]

Geoff I had trouble getting the tube I replaced fitted on the oil trap side. If that side is not properly set, I suppose there could be a leak there. If that is the case, would that be cause for pressurizing the crankcase or act in a manner of a blockage? A leaky by-pass valve is a possibility. I will check the vacuum connections.