Do a search for leaking PCV valves on the AXQ V8...volkswagendude has written about this. its likely the source of your oil burn in cold weather.

 

same thing happen to me today, it was really cold out, about -40. 2004 v8, after 60kms highway driving. smelled burning smell, smoke from the engin, oil leak underneath the car. did you get chance find out what the problem is?

 

I'm willing to bet both yours and the OP's problem is a valve cover leak. Those do eventually age over time, the valve cover gasket that is, and become hard and brittle. Like a fuse, it's the first thing to go, which is actually a good thing.

Go read my threads on PCV valve, as this is the final blow to an already weakening valve cover gasket.

To both the OP and you, please report back your results.


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On my case was valve cover gaskets which went. Oil drops on exhaust pipes and smokes. Also 2004 V8 and it happened year ago. All fine since.

 

couple of video i found...

i think my valve cover gasket need a replacement for sure.do i have to change my PCV VALVE as well? anyone have any idea how much it will cost to replace the valve cover gaskets? looks like lots of work.....

 

My was done under extended warranty in Canada. Gasket kit was only $35. There was 6 hrs labour at $108. I would replace PVC valve yourself. It's so easy. On eBay get the valve for $55 as dealer charges $180.

 

my is out of warranty, so for the labour cost 6x$108=648+$35 part?

 

Don't forget hst! Not that complex job. Your local garage could do it at cca $70 per hr and you buy oem gasket kit from the dealer.

 

Also make sure job is done well. Namely that it does not drip after gasket replacement due to bad setting of cover or bolts tightening. Ask ago to was the engine on that side so that you can monitor it for week or two.

 

TAHNK YOU!

 

Mine was the PCV valve. My valve cover gaskets stayed intact. The video that was posted before on changing out the PCV valve was great. I bought a new one for $108 at Auto Value in Canada and replaced it myself. I don't have an oil leak anymore. Good luck!!

 

I got mine here 6 months ago - works great and shipped in 5 days Audi A6 A8 S4 S8 VW Passat Crankcase Vent Valve B777 | eBay

 

Well, went to dealer yesterday, valve cover gasket are $88 for each side, decided to order online to save some money. Lucky me, found a local guy charge me $25/hr to replace it for me.