Re: Oil In Air Cleaner of 4.0 L
Jeepgod is right, but if you run that line into a Gatorade bottle you'll be breathing fumes all day long. The problem is that the oil comes out of the valve cover in a vapor form, and it enters the bottle. Sure, some may settle and form a puddle, but for the most part my experience has been a cabin full of oil smell from the fumes all over the engine bay. You'll have to rig up something a little more elaborate than just a tube to a bottle to avoid the fumes.
Another idea which helped me some was to slightly enlarge the hole at the entrace to the CCV tube on the valve cover end. Allows it to suck in a little more fumes into the manifold.