Originally Posted by mass-hole

My catch can helped a lot with the fuel-in-oil issue. My first 3 changes had a really heinous odor that would cause me to have to get out from under the truck while I was draining the oil. I put the catch can on at 9500 miles and have done 4 oil changes since and get no noticeable smell. The crap that comes out of the catch can certainly smells strongly of gas and oil, almost like 2 stroke exhaust.

I am not suggesting that the catch can itself does anything, but I do think that rerouting the PCV system is beneficial in keeping the pressure in the crank low and the flow high enough to help vaporize the fuel.

Originally Posted by Cord

I've had the same thought, but there are people on this board that make their living selling catch cans and drilling holes.

Originally Posted by r3cc0s

doubtful that a catch can does anthing...
this is a DI issue

gotta change oil in very short intervals if you don't want to kill your timing chain

Originally Posted by phantomblackgto

Here is what I catch in about 500 miles in colder weather on the Ecoboost. For reference, that's a 20 oz. bottle. That top layer seems to be mostly fuel.

Originally Posted by cnapierala

Wow! What catch can are you using?