Oil in turbo intake

G'day all, just wanting a bit of advice.

I installed a new intake today (yay! 🎉) and there's quite a puddle of oil on my intake pipe.

The o-ring on the pcv pipe (I think that's it) was pretty oily too, I cleaned up the inlet pipe which had a bit of a residue coating.

I installed the inlet pipe 18 months ago so that's the collection time.

Does anyone know if this is to be expected? does the pcv need replacing? catch can?

cheers