Oily turbo core

Hi guys (sorry also posted in T5D5)

just routinely checking and noticed I have signs of oil coming from my turbo and cbv housing. Performance is fine with minimal oil consumption and no smoke. stock 15g

interestingly the core is also oily on the top as well as underneath

i have checked all supply lines bar one forwards facing the Manifold (can't get to it) but that I think is water anyway and all are tight. All copper gaskets were replaced 1year ish ago when did the engine

I initially thought it was the oil return line (a year old) but if it is wet on top as well and under the cbv housing would it still be this? Can they leak from the core or seals to the turbines?

Intake is aftermarket and seals well

no major ptc oil mist

Hopefully the pictures just show the dark oily centre and other residues


Thanks!

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