If you really want it to be.
Like I said, positive crankcase pressure can push oil past the journal bearings.
You can check for evidence of oil leaking mainly in the turbine/dump housing or inlet. If doing either, check how much play is in the shaft, iirc around 1mm play is situation normal for the stock turbo.
If there’s evidence of contact between turbine or compressor blades, the turbo is rooted, but usually you’ll be able to hear the grinding.
If everything checks out then check the pcv for stickiness, blockage or stuck.
Clean or replace.
My pcv was working but pretty varnished at 220klm when I replaced it whilst the tmic was off for installing a new stock inlet and silicone throttle body hose. I could see the inlet was struggling using an inspection mirror and a strong torch: wet with blowby oil and a but bulgey down underneath.
Its just due diligence.
My stock turbo is just fine at 270k klm, btw.
Car is tuned to 15psi and will see 17 or so when wot in 2nd gear
I know this because I have virtual gauges using the Btssm obdii app.
But they do just “go”, my buddy’s went around 100k klm... it looked as if the nut came off the compressor shaft end and went for a joyride on the blades. No idea what caused this, other than bad luck and my08 tbSTi lol.
The going rate for a second hand vf46 is around $300-500, $800 for a vf52, the latter will require a tune.