Thanks- Audi Tek:

Can you advise what the fix is for the breather system.

 

Thanks for that answer. My intuition told me that the oil was probably passing out through the turbo somehow. I guess the obvious question is whether that results in things getting gummed up so to speak at the intercooler.
Mine had the breather done earlier this year. The oil consumption is now around 1lt per 5000km, which is way inside specs, so that was a good fix for mine.
I was told by the service team that on cold start oil is also injected into the cylinder to ensure max lubrication at the time of peak wear. Is that correct?
Thanks again.

 

Change oil every 7500 miles that my first recommendation I give. Because of crankcase breather issues on cars that are not driven on the highway a lot the car seems to be consuming oil past the piston rings. Dealers are replacing the ring s but they are not the issue. Just change your oil more frequent it is a turbo motor after all. Second the hood latch affects the ability of the sensor to read so if the hood is open it won’t read oil level. Also if the latch is faulty it will tell you to add oil and never reset. Misfires in the morning are due to rich mixture with poor gas quality and excessive carbon build up on intake valves floor the car everywhere you go and clean all that crap out. If you are keeping this car buy a water meth kit right away. The Audi VW that I have taken apart that have directinjection motors with water meth kits have no carbon build up on valves and the intercoolers are clean free from oil.

 

Currently we are replacing the breather assembly, Performing a ECM software update to alter internal vacuum levels And replacing the front crank seal so it can handle the change.

 

For the most part this fixes almost all the oil consumptions issues with the 2.0

Now Audi is stating that there are some engines out there that have improperly machined piston rings. So if Oil consumption continues after the breather / ECM update repair.... Then the next step is stripping the motor down and replacing the pistons

 

ALL car manufacturers have carbon problems. You can goole Carbon "BMW" Carbon "Chevy" and you will find forums filled with complaints. Water / Meth isn't a reasonable fix. Just make sure you warm the engine up everytime you drive it no matter how short the drive is and have a top end cleaning down every 50,000 miles

 

There is an UPDATE (used to be called RVU, Required Vehicle Update) that replaces the PCV breather assy AND the turbo connecting pipe with revised pieces. This is a free update as long as the cars within the warranty extension for these parts. Don't quote me on this right now (top of my head) but think it's either 100,000 or 120,000 miles. This is due to the excessive failure rates of the original design parts.
On the carbon thing. Direct injection means no fuel spraying against the back of the intake valves to keep them clean. Only air and oil vapor. Trade off (for ALL direct injected engines of any make) for more power on less fuel with cleaner exhaust. Diesel's have had the coking/carbon problem since the beginning of time, since they are, and always have been, direct injected. We've been having very good luck using the Wynn's 3-Step induction service at my dealership. If it's done say, every 20,000-25,000 miles, the improved drivability and fuel economy are well worth the cost. Consider it normal maintenance now days. Not MORE maintenance than in years past, just DIFFERENT maintenance. Don't forget, the cost of things that aren't needed to be done now that were 10-20 years ago.

 

Hey all, I am a B5 owner but I work at Audi of Hunt Valley. This has become a reoccurring problem with customers and as above ^ AudiAG has started to order us to replace pistons and rings under warranty. We just did one today and one last week. Just my 2 cents. Get your dealer to report this to Audi tech assist and they should recommend the repair.

 

I own a 2011 A6 TFSI, oil consumption seems high, the oil indicator went on before the first check and Audi said it was normal for my car and filled up the oil free of charge.

This week, aprox. 4,000 km before next check, the oil indicator went on again, I called and they repeated the same protocol but this time and Audi expert told me that high oil consumption is normal for A6 with 4 cilinder turbo fsi engine. The oil was replenished free of charge again and they invited me to bring the car any time the oil indicator turns on to fill the oil free.

Since my car is not leaking oil, I find this very unusual and would like to know more about this situation.

Javier

 

Audi Tek,

Do you know when the new breather assembly, front crank seal and ECM update was incorporated into production of cars? I have a 2012 A4q and haven't been able to get a straight answer from my dealer when I ask whether my car was manufactured with the new assembly and ECM update.

Thank you in advance and thanks for all of your input.