Hi,
I am finding oil in my air intake but have noticed something a little odd. The hose coming from the one value cover which has the pcv value goes into the in-take manifold but the hose from the other value cover goes into the air box before the throttle body. I have oil in the air box which I think is because the pcv was stuck close (i know it's not stuck now, because I replace the old one that wasn't stuck closed anyways and the old one wasn't stuck close but maybe it was before I purchases the vehicle) forcing oil vapour to flow back the other way into the air box. So my questions is that what would have caused the oil it get into the air intake? And since I am looking into installing a catch can which line do I use for this? Should I use both? And Do I still need the PCV in place if I go with a catch can.
Thanks,
Carl