Hi im really stuck here I have a skoda octavia 64 plate 2.0 diesel 150 bhp it's mileage is 250k miles about 3 months ago I had a leak of oil and it was the crank seal had that changed since then my car is drinking oil about every 1000 miles light comes on I fill it up according to the dipstick and also I had a dpf removal about 6 months not sure if that affects it took to mechanic and there was no oil leak just a bit near the dpf clamp but he said the amount of iv put in there should be a puddle but there's no burning or mixing so can anyone help or has anyone come across this please 

DPF Removal has nothing to do with it. Might be your piston rings. Mine's also drinking up more oil than yours.

How does one get it checked properly because no mechanic can figure out what's wrong with it and why it drinks too much oil 

If your car is losing oil and it's not from leaks, or going out through the coolant system (e.g. 'mixing' and head gasket failure), then it's leaving the engine through the combustion process (or a bit further along) as there's no other way for it to leave the engine.

 

After that it's a case of working out why that's happening.  I agree with Bogdan regarding piston rings.  Dry and wet compression tests and visual inspection might help reveal.  But there are other causes - valve stem seals, turbo seals, a faulty PCV.  If your mechanic can't work out what's happening, then I'd respectfully suggest you need a mechanic with more of an idea.

 

Gaz

Edited 11 September, 20223 yr by Gaz

Iv been to a few but noone wants to touch it as its a big and long job but it's either repair the car or buy a new one and in this day with car prices through the roof thinking of sorting this out 

You're surely going to have a big bill anyway aren't you when your MOT tester fails it for the missing DPF?

Unless the oil consumption exceeded 0.5L per 620 miles, VAG consider it acceptable even on a new car… especially on a new car.

Maybe he has left he casing intact! 😂

@Nab93If the mechanics you have been to or spoken to can not figure out why it is using oil i can understand why they do not want involved.

Also that maybe they are crap mechanics rather than not wanted landed doing the work.

 

Was the person that removed the DPF a mechanic?

 

The 0.5 litres oil use in 1,000 km / 621 miles was never acceptable and is not within tolerances even if VW Group do say , May use as much as.

They are taking the Micheal and got peed over often enough when 'Official Oil Consumption tests' were properly done.

Weighed oil, sealed filler, dip stick and drain plugs etc. 

 

They have for decades printed the same guff,

but then that might involve crossing high alpine mountain passes in high summer towing an elephant.

 

They put the same guff in Owners manuals for over 2 decades for all engines, petrol / diesel, 3,4,5.6,8,10 or 12 cylinders from 44kW up. 

 

0.3 litres in 1,000 km was enough oil use to get engines replaced under warranty, but that took a fight far too often. 

 

This owners manual stuff is b0!locks. 

UK roads, UK NSL's, UK Temperatures, solo vehicles. no way was or is 0.5 litres in 621 miles acceptable.

 

But then with 7 years or more car with 250,000 miles on it & a DPF stripped out, who is carrying other than the owner, there is a stripped out or removed DPF,

Skoda / VW are certainly not, they were not caring that much when in the manufacturers warranty period..

Edited 11 September, 20223 yr by roottoot

1 hour ago, roottoot said:

@Nab93If the mechanics you have been to or spoken to can not figure out why it is using oil i can understand why they do not want involved.

Also that maybe they are crap mechanics rather than not wanted landed doing the work.

 

Was the person that removed the DPF a mechanic?

 

The 0.5 litres oil use in 1,000 km / 621 miles was never acceptable and is not within tolerances even if VW Group do say , May use as much as.

They are taking the Micheal and got peed over often enough when 'Official Oil Consumption tests' were properly done.

Weighed oil, sealed filler, dip stick and drain plugs etc. 

 

They have for decades printed the same guff,

but then that might involve crossing high alpine mountain passes in high summer towing an elephant.

 

They put the same guff in Owners manuals for over 2 decades for all engines, petrol / diesel, 3,4,5.6,8,10 or 12 cylinders from 44kW up. 

 

0.3 litres in 1,000 km was enough oil use to get engines replaced under warranty, but that took a fight far too often. 

 

This owners manual stuff is b0!locks. 

UK roads, UK NSL's, UK Temperatures, solo vehicles. no way was or is 0.5 litres in 621 miles acceptable.

 

But then with 7 years or more car with 250,000 miles on it & a DPF stripped out, who is carrying other than the owner, there is a stripped out or removed DPF,

Skoda / VW are certainly not, they were not caring that much when in the manufacturers warranty period..

The guy that did the dpf was a specialist but the problem started before that been good few months I had this problem when I got the car in 2018 but I was advised not to use oe oil quantum and I switched to granville and have used ever since and had no problem until few months ago when the crank seal was replaced as there had been a slight leak and after that is when the oil consumption became more consistent every 5 days or so top up 1 litre plus below is the record iv kept of the times I had put  oil in past few times 

 

 

248555
1 litre oil
29 Aug 2022 

7 9 22 engine light
249627

1 litre engine oil at 249629
23 20
7 9 22

1 litre at 11 sep 2022
250100

 

Having looked @ your last post I struggled at first to make sense of it because of the way you have wrote it, however even for a high miler that's a lot of oil being used. I can't help but wonder if a turbo oil seal has gone allowing oil to pass into turbo where it is then burnt.

I also wonder if trying to solve the problem is a case of urinating in the wind given the fact the DPF has been removed, I may well be wrong but I would expect the car to fail the next MOT on soot levels.

I won't mention the legality of driving the car on the road.

@Nab93

How long have you had the car, and how many miles done when you got it?

 

Are you sure you have the oil at max quantity for the engine.

Top of cross hatch when cold, and still up in area A of the dipstick at Normal Operating temp.

So run at least 10 miles and the oil @ 90 *oC indicated and on the flat and dipped after a few minutes.

 

**Are you sure the correct dipstick is in the engine and there was not a replacement.**

Is it you that has done an oil and filter change and know how much oil went in?

 

Sorry but what has the Brand / Producer of the oil to do with anything?

?

Is the Granville 5w 30 FS III   ?

so to VW 504 00 / 507 00 just as the Quantum that dealerships used for many many years in TDI's and TSI's.

 

http://granvilleoil.com

Nice priced oil so makes sense to buy if getting for much cheapness and needing lots, or if it actually has the engine requiring less.

If it has the owner thinking less oil is consumed then that is all one wants. 

 

Edited 12 September, 20223 yr by roottoot

14 hours ago, p733t said:

Maybe he has left he casing intact! 😂

Won't stop it failing on emissions tho...

@NikTheGeek

I'm pretty sure MOT test only fails on DPF if it's visually missing or if the exhaust is emitting smoke.

I did a quick bit of research too on this before replying.

Emissions tests as part of MOT doesn't yet detect for soot itself from what I could find.

I'm not gonna hijack this thread for this dispute if you know more regarding DPF and MOT test for people that are interested that's up to you, personally I have the DPF on my diesel and not removing.

 

Back to oil leak:

My options are going to be checking the Turbo, checking the breather hose, and if any other checks my mechanic suggests.

Once the above things are checked etc I'm going to remap as a contingency plan.

22 hours ago, daftbugga said:

Having looked @ your last post I struggled at first to make sense of it because of the way you have wrote it, however even for a high miler that's a lot of oil being used. I can't help but wonder if a turbo oil seal has gone allowing oil to pass into turbo where it is then burnt.

I also wonder if trying to solve the problem is a case of urinating in the wind given the fact the DPF has been removed, I may well be wrong but I would expect the car to fail the next MOT on soot levels.

I won't mention the legality of driving the car on the road.

It's a modification. Have you told your insurance company?

No point declaring a modification to keep having valid insurance when the modification is illegal in the UK. 

 

You just keep your fingers crossed that if you are in an accident and someone dies or has life changing injuries even if you are not to blame, the accident investigator / officer and the loss adjuster are none the wiser. 

(They pay out 3rd parties and come after you for the money as you have no insurance.)

They are not stupid. 

Also loss adjusters check your social media because they are car enthusiasts, or good at their job and like to get income.

 

http://www.gov.uk/government/publications/diesel-particulate-filters-guidance-note/diesel-particulate-filters#

 

Edited 12 September, 20223 yr by roottoot

12 minutes ago, roottoot said:

No point declaring a modification to keep having valid insurance when the modification is illegal in the UK. 

 

You just keep your fingers crossed that if you are in an accident and someone dies or has life changing injuries even if you are not to blame, the accident investigator / officer and the loss adjuster are none the wiser. 

(They pay out 3rd parties and come after you for the money as you have no insurance.)

They are not stupid. 

Also loss adjusters check your social media because they are car enthusiasts, or good at their job and like to get income.

 

http://www.gov.uk/government/publications/diesel-particulate-filters-guidance-note/diesel-particulate-filters#

 

I get your point. 🙂 These comments may get the OP to put the DPF back. 

16 hours ago, roottoot said:

@Nab93

How long have you had the car, and how many miles done when you got it?

 

Are you sure you have the oil at max quantity for the engine.

Top of cross hatch when cold, and still up in area A of the dipstick at Normal Operating temp.

So run at least 10 miles and the oil @ 90 *oC indicated and on the flat and dipped after a few minutes.

 

**Are you sure the correct dipstick is in the engine and there was not a replacement.**

Is it you that has done an oil and filter change and know how much oil went in?

 

Sorry but what has the Brand / Producer of the oil to do with anything?

?

Is the Granville 5w 30 FS III   ?

so to VW 504 00 / 507 00 just as the Quantum that dealerships used for many many years in TDI's and TSI's.

 

http://granvilleoil.com

Nice priced oil so makes sense to buy if getting for much cheapness and needing lots, or if it actually has the engine requiring less.

If it has the owner thinking less oil is consumed then that is all one wants. 

 

Iv had the car for over 4 and half years I got the car in about 100k and now have done 250k in total regular maintained etc oil filter and oil change and dipstick hasn't been changed 

1 hour ago, ords said:

I get your point. 🙂 These comments may get the OP to put the DPF back. 

My concern is the oil consumption I will have the dpf put back on before next mot 

3 hours ago, Nab93 said:

My concern is the oil consumption

I can't see why a DPFectomy would affect the oil consumption.

Surely gutting the DPF will help the engine, no regens, can use the cheaper oil...

How much cheaper oil do you want to use compared to you can get 5w 30 fs III?   It can be bough for much cheapness. 

43 minutes ago, roottoot said:

How much cheaper oil do you want to use compared to you can get 5w 30 fs III?   It can be bough for much cheapness. 

I only use granville just a pain having to keep putting oil in every few days but I did get it checked by another garage and he suspects the pistons are shot so might have get a new engine or get this one recon 

11 hours ago, roottoot said:

No point declaring a modification to keep having valid insurance when the modification is illegal in the UK. 

 

 

http://www.gov.uk/government/publications/diesel-particulate-filters-guidance-note/diesel-particulate-filters#

 

 A very minor point but it used to be perfectly legal to remove a DPF but illegal to then drive the car on the road. Not sure but I think it's still the same today.

1 hour ago, Nab93 said:

he suspects the pistons are shot

I don't suppose he's tried to prove it with a dry and wet compression test?