Öldurst beim 2,0 TSI: Einfahrproblem? (Solution) | Posts 16+

Small update:
Yesterday, we took another trip of approximately 260 km, mostly on the highway at speeds of 130-150 km/h. After the return trip, I pushed the Polo for about 60 km on the highway, "giving it full throttle whenever possible," and achieved an overall average of 9.5 liters per 100 km over a total distance of 190 km, with minimal braking.
The oil level on the dipstick didn't decrease at all during the entire 320km journey.
This is quite a strange lottery...

ulf wrote:

Das ist schon eine komische Lotterie . . .

No, as long as the 10,000 km service hasn't been completed, anything is possible!

Lass' mal die Finger von dem Blechdeckel vorne, fahr meinetwegen GENAU 1000km, gucke was der so an Öl nippelt.

Je öfter Du in kurzen km-Abständen schaust, umso mehr wirres "wer misst misst Mist" misst Du.

Don't worry about it, just leave the metal lid open for at least 1000 km.

It is well known that T(F)SI engines consume little to no oil under load, but consume more oil during short trips and partial load conditions.

It's still the same for me, even after over 100,000 km.

Looking at the TPI specifications where pistons are replaced due to excessive oil consumption, I suspect a generally low pre-tension of the piston rings and a relatively large tolerance for thermal piston expansion. Under heavy load (hot pistons), the piston rings "seal" properly, but with short trips, partial load, and low RPM, they allow oil to pass through.

I'm also noticing increased oil consumption, especially when driving at low RPMs. That's why I try to keep the engine speed above 1500 RPM.

Generally, I consider an oil consumption of approximately 1 liter per 3000-4000 km to be normal for a TFSI engine with an EA113 block. I am not aware of any major damage in this case, unlike with the EA888 engine, which can sometimes consume as much as 500 ml per 1000 km.

Benni wrote:

It is well known that T(F)SI engines do not consume much oil under load, but they do consume oil under short trips and partial load conditions. Is it still like that for me, now that I've driven over 100,000 km?

Ah, that hadn't reached me yet...
I used to assume, based on the old rule of thumb, that oil consumption increases with engine speed and the required power output.

Short update:
My engine seems to have almost no oil consumption when it's fully topped up, but it starts consuming more and more oil as the level drops – see the attached [document/image/etc.].
A 0.5mm difference on a 900km stretch is only about 1/14th of the (apparent) consumption when the level is half full (4mm/500km).
The 0.3 liters of oil that spilled out when the tank was filled to 2/3 capacity had been completely consumed after 1300 km.

I always checked the vehicle in the garage after it had been standing for at least one night.
I now consider significant reading errors to be quite unlikely, because none of the approximately 15 checks showed a higher reading than a previous one (except, of course, immediately after filling).


Does anyone have an explanation for a high oil consumption that is heavily dependent on the fuel level? Perhaps something related to the crankcase ventilation system?

Even slight deviations in the contour of the oil pan can affect this, and I wouldn't expect a linear reading on the dipstick.

I don't necessarily expect a linear development either.
However, what surprises me is that the oil level drops more than 10 times faster (per 1000 km) when it's in the middle range than when it's in the maximum range.

Have you always driven the same distance with the same driving profile on the glass foot?

Okay, I believe there are far too many influencing factors. Even a reading in the millimeter range on the dipstick is nonsense; a single drop of liquid in the dipstick tube is enough to ruin the result.

That's why it's called a "peil-stab," it's not a measuring device.

My TFSI engine, I felt, consumed the least amount of fuel in the last third of its range, but I didn't want to waste my time trying to make it a science.

When the oil can's indicator turned yellow, it meant there was about half a liter left, and that was enough. I didn't let it reach the maximum level because I thought that more oil would leak out through the KGE (likely referring to a specific component or system).

Benni wrote:

Have you always driven the same distance with the same driving profile on the glass foot?

The overall driving profile within the intervals in the image was always generally similar (mostly country roads, some highway, estimated about 5% full throttle), but of course, it cannot be identical to what you would find in a measurement laboratory.

Quote:

Just a reading in the millimeter range on the dipstick is already nonsense, because even a single drop in the tube of the dipstick is enough to ruin the result.

If the engine has been standing for at least 8 hours before the reading, then apparently all the drops from the tube have flowed back into the reservoir. Otherwise, my numerous checks would eventually have shown more than the previous check without needing to be topped up - but that was never the case.

Quote:

My TFSI, by feel, seems to consume the least amount of fuel in the last third of its range...

I kept it at the maximum level because I thought that it pushes more through the KGE (Kühlergrill).} With mine, it seems to be the opposite. I haven't run it completely empty yet, not even down to the very bottom of the dipstick.

I used to drive the car until the oil light started flashing yellow, and then I would add half a liter of oil.

So, I then managed to travel a good 2000 km. I didn't have enough time for deeper thoughts about it, as it was a comfortably bearable burden .

Meanwhile, the car has sold well, and I informed the buyer about it. I haven't received any complaints from him about it either.

I think the topic is just normal with the ea113, as long as the intervals don't get shorter, just go for it and have fun.

Benni wrote:

I drove until the yellow warning light for the oil came on, and then I added half a liter. So, I managed to travel a distance of roughly 2000 km.

That's about 0.25 liters per 1000 km. This is quite similar to the overall fuel consumption of my CDL.

Inzwischen ist herausgekommen, daß sehr viele TFSI Motoren mit teilweise stark überhöhtem Ölverbrauch kämpfen.{MARKHE}

Just found out the cause: The holes in the oil scraper rings on the pistons are too small, which causes them to carbon up easily.
Sobald dies geschieht, steigt die Verkokung am Kolben nochmals stark an. Im Bericht wurden Ölverbräuche bis zu 3 l auf 1000 km genannt.

In the USA, the engines of affected Audi drivers were repaired by the manufacturer. And here?

Nowadays, they are using three-piece oil scraper rings. In recent production years, there have been few reports of problems, similar to the situation with the timing chains.

In order to prevent the oil consumption from becoming too low, with the model year change, Longlife IV oil with a 0W-20 viscosity, including (again) a significantly reduced HTHS value, was introduced . In order to achieve "up to 4%" fuel savings, everything is being done...

@Roger: Du meinst mit Öl fahren und Benzin kontrollieren?
It feels like I'm driving around with four zeros on the front grill now.

Yes, that's one way to look at it...

Controlling fuel consumption with the four rings can also be a somewhat enjoyable experience. The A4 (8W) comes from the factory with a huge 40-liter tank . Those who didn't select the optional 54-liter tank when buying new will unintentionally have a lot to do with it.

Unfortunately, small fuel tanks are common in many places; this isn't just an Audi-specific problem. However, since the "standard" fuel consumption has also decreased, the range remains the same... or have I misunderstood something?