Oil in runners

[Bigalamo]

I took off the plenum cover to paint and looked at the runners. I have an elite engineering catch can hooked up, as well as a clean side separator. I was wondering if a light coat of oil in the intake manifold is normal even with this setup.

Pics:



Also, here was the outcome of the painting. Going to do the throttle body, IM and valve covers soon too.



Edit: I just realized this is in the wrong section.