I have no idea why I'm using this much oil in less then 200 Miles and that's be generous it's usually
More. I have tried to uv the oil and there are no visible signs of leakage. I currently re attached the rear pcv with a OCC To see if that makes a difference but not much. I am finding a lot of oil in turbo inlet and outlet ports. Before I go replacing the turbo does anyone else have any ideas of what this could be.

I am noticing smoke from the tail pipe when I run the car in the morning but I'm guessing this is normal.


Sent from phone

 

Oil in the turbo inlet would be from the PCV valve that is in the valvecover. For some reason you're getting a lot of blowby forcing oil out the valvecover breather. It would be coming in right at the turbo where the front PCV valve connects to the tube going from the intake box to the turbo inlet. Try putting a catch can on PCV valve in the front of the engine bay and see if that collects any oil.

 

I just replaced the valve cover to the updated version. Originally(with leaking cover) I had the rear pcv blocked with and occ, I got excessive blow by.

So I added a t fitting connecting both pcv valves to the occ still excessive (both on leaky and new
Valve cover)

I did also try keeping both opening and adding an occ to the front.

Right now I have the rear pcv valve connect to occ and the front is open.( this was last night so it's to early to say if it helps. But looks as if pressure was relieved, oil was around the inlet not in it.)
My guess is the other ways were causing to much crank case pressure? If that sounds right. Resulting in blow by.

I know the occ doesn't technically stop oil consumption but I am somewhat confused as to how; when people add them;in some cases or stops consumption. I've confused my self to te point of over thinking.
Sent from phone

 

Either I'm not understanding you or you don't quite understand how a PCV valve works. If you had the rear PCV valve going into a catch can and the front one venting to atmosphere then there would be absolutely no oil anywhere in the intake tract because you are no longer re-circulating the blow-by. It's just being vented to atmosphere. That doesn't mean you've fixed your blow-by issue. It just means you've fixed the oil getting into your intake issue.

Catch cans don't stop oil consumption unless they drain back into the oil pan.

 

Lol, I am terrible at explaining things over a phone.

I am trying to get some ideas as to how stop the ridiculous oil consumption I keep getting. I have no leaks so im assuming its something to do with either the pcv system, the turbo or the engine not working correctly.
I assumed it is something with pcv system; I was under the impression somehow people are reducing oil consumption by adding a occ with a rear pcv block; I dont not understand how that block is doing that.

I assume then if both pcvs are open and im still catching a lot of blow by something is wrong with the turbo?

 

Here's a link to my OCC experience --- https://www.northamericanmotoring.co...c-install.html

Driving habits / style seem to be a major factor in OCC connection and resultant oil consumption. I suggest you get a Bentley Manual and study the emission controls section to learn how the two vents work. Excessive crankcase pressure is a major factor when considering oil consumption. Screwing around with the OEM design of emissions routing can cause enough crankcase pressure to result in oil seeping into the turbo air inlet chamber (per the turbo repair people I talked with).

My own driving style / habits consist of 95% low manifold pressure. When the rear vent is blocked, I have serious oil consumption thru the turbo air chamber seal. If you have doubts, try disconnecting the OCC and put it back to OEM emission connections. That should clear your oil consumption problem. If not, you should be able to diagnose the problem a lot easier.

Also, if you've been driving like this for awhile, your air ducts / FMIC are probably pretty well coated with oil, and will cause smoke even after the problem is fixed. And, your signature indicates a custom OCC. Are you sure it's functioning correctly?

 

First lets define blowby. Blowby is air that makes it from the combustion chamber, past the piston rings (generally), and into the oil pan thereby pressurizing the oilpan. That pressure has to be relieved somewhere. Relieving that pressure is the goal of the engine's PCV system.

People aren't reducing oil consumption by adding a catch can. At least not that I'm aware of. There are two PCVs on the car for a reason. The rear PCV operates while on manifold vacuum. This is basically any time you're not making boost and pressurizing the intake. So when just cruising around at constant throttle the rear PCV is opening and venting the crankcase (oil pan) pressure and that vented air (with oil droplets mixed in) is being sucked into the engine intake post-turbo and then being burned in the combustion chamber. The front PCV operates while under positive manifold pressure which is anytime you're making boost. When making boost the rear PCV is closed and the front PCV is open. Under boost the positive crankcase pressure is vented through the front PCV and sucked into the engine pre-turbo and being burned in the combustion chamber. This would be why you have oil in the turbo inlet from the front PCV.

If both PCVs are open (vented to atmosphere?) then you wouldn't be catching any blow-by. All of the blow-by would be vented to the atmosphere. Any oil in the intake at that point would be a direct result of the turbo seals leaking. And what do you mean by "catching a lot of blow by"? Where are you "catching" it if both PCVs are open?

There is nothing "wrong" with the PCV system if you're getting excessive oil consumption. It's doing it's job. The problem is either with piston rings not sealing properly causing excessive crankcase pressure or the seals on the turbo are going and it's leaking oil into the intake and/or exhaust. Either way your excessive consumption is due to the engine burning the oil. Why it's burning the oil is another question.

 

Ah I appreciate that v10 that clears up a lot in my head.

Yeah i've owned to mini's know its probably a good idea I invest in a Bentley manual.