Engine blow by vapers are designed to be sucked into the airstream and burned in the combustion chamber some on the oil will collect in the Intake box. The tube is used to drain the oil condensation. At times when you take your air filter out there will be a small amount of oil in there. The oil will accumulate quicker when you over fill your crankcase.
KCW, here's the picture he was trying to post.
Shawn, To post larger pictures I use imgbb https://imgbb.com
Just open, sign in, start upload, choose picture, upload, copy full bb code linked. Paste in thread. There is not a limit size restriction. Try it and let me know how it works for you.