I noticed oil in intake tube from CAI to intake manifold. I think it's from engine ventilation tube. What's wrong?

BTW i have 120K miles. At 111K miles i changed piston rings and gaskets.


PS I hope there is no warning for double threds smile.gif

 

Nothing's wrong...that's normal. It dirties your throttle body a bit but nothing serious. Buy a catch can or put a filter on the crank case and that will stop it.