The above warning came up on our 2.0TDI Karoq yesterday and is still there. The bizarre thing is that it has had no oil added since the last service. I just checked the oil and it is at the top of the range on the dipstick, maybe slightly above allowing for a slight slope.

 

Being winter it has only had short journeys since New Year, 1-5 miles typically. Could it be a little water contamination that would "burn off" with a long run? If not I am stumped as to how at least 5K miles since the last service and definitely no oil added since, this warning should suddenly now appear. 

More likely to be fuel contamination into the oil, unfortunately, due to interrupted/incomplete regens.

Thanks, but could you elaborate on "interrupted/incomplete regens"?  What does that mean and what would cause it? The car is coming up to 3 years old, only done 20K miles.

I'll encourage someone else to flesh out that statement. Never owned a vehicle with a DPF myself.

 

There are other threads posted on the same thing.

Edited 6 February, 20251 yr by Ootohere

Thanks, I have had a poke around YouTube and get it now. Short journeys not getting the oil hot and stopping the car mid regen cycle means the diesel goes into the sump, hence rising (contaminated) oil level.

 

The question now is take it for a very long run or get the oil changed? 

3 minutes ago, Ootohere said:

There are other threads posted on the same thing.

 

True, but I did search before asking clearly not using the PRECISE wording, eh?

The engine can not create more oil, it can just be diluted with Diesel. That used to be an injector issue, now commonly & sadly a Regen issue.

 

Edited 6 February, 20251 yr by Ootohere

Excess oil can be sucked out using a Sealey hand vacuum pump. The ideal would be to do an oil and filter change.

31 minutes ago, Breezy_Pete said:

I'll encourage someone else to flesh out that statement. Never owned a vehicle with a DPF myself.

 

I certainly wouldn't own another one! 

If you go for a petrol from after 2018 there is a GPF and it about time now that we might hear how much GPF replacements might cost.

Plenty will never have an issue but there will be the ones that will.

1 hour ago, Woody37 said:

I certainly wouldn't own another one! 

Unfortunately modern diesels with DPF and EGR require regular long distance journeys. They are incompatible with short journeys and annual mileages less than 10,000 miles per year. Previously I had a 2.0L TDI VW Touran. My daily commute was 80 miles per day, so 400 miles per week, 20,000 miles per year. All was fine to 90,000 miles then I retired - annual mileage dropped to 3,000 with short 2-3 mile journeys. EGR valve blocked and replaced at 96,000 miles, EGR blocked and replaced again at 102,000 miles. £700 every 6000 miles ment a change to a petrol 2.0L TSI Karoq.

2 hours ago, Ootohere said:

If you go for a petrol from after 2018 there is a GPF and it about time now that we might hear how much GPF replacements might cost.

Plenty will never have an issue but there will be the ones that will.

GPF regens are unlikely to cause similar issues to DPF as they are done on closed throttle overrun.

& yet there are those that have issues with not using that much, short cold start trips.

Reporting high RPMs.  But then we are now into 7 years since Skoda fitted and maybe it is just 1.0 TSI that will have issues, even though 1.5 & 2.0 TSI,s are starting to have. 

 

Best never say never.  After all the cars having issues if any do will be out of Warranty.

We will see what main dealers quote for a GPF replacement. 

Edited 6 February, 20251 yr by Ootohere

Everyone uses the correct / recommended oils, so no Wukking furries. 

 

http://briskoda.net/forums/topic/525744-oil-type-related-to-gpf-gasoline-particulate-filter

 

 

2 minutes ago, Ootohere said:

Everyone uses the correct / recommended oils, so no Wukking furries. 

 

http://briskoda.net/forums/topic/525744-oil-type-related-to-gpf-gasoline-particulate-filter

 

 

... and yet the warning indicator shown in the posted image is NOT the GPF one.

That thread with the screen shot was just to show someone with a Brand New car having a flaky over a GPF.   No issues there if an issue.

Return or reject car.

Or they can fix it after saying never seen that before, 

 

The linked thread is for the video.

The members cacking themselves about a GPF and high RPM or odd behaviour started pre covid, and some after.

Short drives.

 

 

Edited 6 February, 20251 yr by Ootohere

2 hours ago, Woody37 said:

The question now is take it for a very long run or get the oil changed? 

 

Both, the latter with a degree of urgency, diesel diluted engine oil is a poor lubricant aside from on scaffold clamps!

 

2 hours ago, thamestrader said:

Excess oil can be sucked out using a Sealey hand vacuum pump. The ideal would be to do an oil and filter change.

 

Essential in my view, leaving diesel diluted oil in the sump is not desirable.

 

21 minutes ago, Ootohere said:

& yet there are those that have issues with not using that much, short cold start trips.

 

It was not a problem on VAG diesels pre the "fix" to the emissions software, all the other manufacturers were suffering but not VAG, funny that!!!

 

My mileage is now low after being high for several years, nearly all short journeys but with the emissions fix rolled back and the EGR disabled the engine is running just fine, I heard the fans running on shutdown 2 nights ago, the first time in a couple of years.

@J.R. you just posted a quote were i was posting about a GPF so petrol cars, not DPF, diesels. 

 

 

Edited 6 February, 20251 yr by Ootohere

I wasn't aware but as that was even more relevant to diesels my reply is worthwhile.

Update on the original post:

 

Having checked the oil level on a perfectly flat surface, engine cold, it is at but not over the upper marker on the dipstick. Next drive the warning light and message had gone. I spoke to the dealer and a technician said it was ok to drive, oil change due in 2,700 miles.

 

Next, I took the car out for an 80 mile mid-evening sports mode Italian tune-up  

 

Any more warnings I will get the oil change sooner. In truth the car will be changed for a petrol hybrid in a couple of years, perhaps another Karoq if they finally launch one, if not a Sportage or Tucson, so ultimate longevity of this diesel engine is not my greatest concern. The only reason I bought a diesel again was because it was the only sensible 4x4 option, needed because of a hilly home location and elderly dependents who need us whatever the weather. 

3 minutes ago, Woody37 said:

Update on the original post:

 

Having checked the oil level on a perfectly flat surface, engine cold, it is at but not over the upper marker on the dipstick. Next drive the warning light and message had gone. I spoke to the dealer and a technician said it was ok to drive, oil change due in 2,700 miles.

 

Next, I took the car out for an 80 mile mid-evening sports mode Italian tune-up  

 

Any more warnings I will get the oil change sooner. In truth the car will be changed for a petrol hybrid in a couple of years, perhaps another Karoq if they finally launch one, if not a Sportage or Tucson, so ultimate longevity of this diesel engine is not my greatest concern. The only reason I bought a diesel again was because it was the only sensible 4x4 option, needed because of a hilly home location and elderly dependents who need us whatever the weather. 

It sounds as if your lubricating oil level sensor may be a little oversensitive - suggest doing regular checks using the stick for the future.

@Woody37 since you know the Oil Level checked cold,  you can check it as per owners manuals.

Only 1.2 44 kW VW Engines are checked cold. they have a 2.8 litre capacity.

 

So next time the oil is at normal operating temperature so about 90*oC indicated check once stopped on the flat and after 4 or 5 minutes. (Skoda / VW say a few minutes.) 

Where is the oil now showing? 

I wrote this a couple of years ago (Jan 2023). 

 

"Regens are made by extra diesel being injected into the engine. If these regens don't burn off this diesel then it runs down the bores into the engine thus diluting and raising the oil level.  Not good.  If this has happened you will also need an oil change.

 

If a regen is occurring and you turn off the engine before it has finished the engine will be hot and often the cooling fan will remain running.  After "the fix" my 2010 diesel Yeti did this regularly.  I would then immediately restart and go for a decent 60/70 mph drive alternating between 3rd or 4th gear, not top gear, in order to burn off this extra diesel and complete the regeneration. 

 

Modern diesels are not designed for too many regular short journeys.  This was the reason that when my driving pattern changed I got rid of my Yeti and bought a petrol Karoq.  I am currently only doing around 5000 miles a year."

 

Tom

Edited 7 February, 20251 yr by Sanqhar

Final Update: I had the scheduled oil change done 2,500 miles early to remove the diesel contamination. Then it struck me, back in summer 2024 whilst on holiday I used Eco-mode for the first time and my wife, who drives the car day to day, has used it most of the time since including numerous short journeys from cold of 1-3 miles. This "rising oil level" problem only started, we feel, since using Eco-mode. There must be something in that?