High Oil Consumption issue

[IM6]

Guess what guys? The dreaded Oil light came up again asking for oil exactly after 345 miles since the last top up.
Prior to that I did 1470 miles to Holland and Germany, mainly motorway miles.

[M5 London]

Originally Posted by IM6

Guess what guys? The dreaded Oil light came up again asking for oil exactly after 345 miles since the last top up.
Prior to that I did 1470 miles to Holland and Germany, mainly motorway miles.

They should give you a new engine.

[mjposner]

I would complain to BMW national. I am now on an oil consumption test for BMW to try and sort out this problem.

[IM6]

the question is where is that extra oil being burned? if its seeping through the cylinder wall, would it do so without producing blue smoke out the back? someone also pointed out possible turbo leak! again the dealer would have to be pushed to the brink in order to strip the engine down.

[IM6]

Originally Posted by mjposner

I would complain to BMW national. I am now on an oil consumption test for BMW to try and sort out this problem.

MJPOSNER : whats your average oil consumption per litre currently? mine is 350 miles.

[mjposner]

I am averaging 675-700 miles per warning, then refill one quart. No metric here.

[IM6]

see you are within the BMW guideline tolerance there. that's why they are unwilling to investigate further.

[mjposner]

They told me 700 miles is minimum, I was just below, plus a squeaky wheel so they are at least humoring me. Plus I have received at least 7 free bottles of oil. I just don't want this to get worse, especially as my warranty ends soon.

[IM6]

how can I press for a new engine?

[a_bum_bruh]

Originally Posted by M5 London

1) Which dealer are you using ?

2) Have they declined to carry out an official oil consumption test (or something similar to this) ? I presume not.

3) What is the exact brand / type of oil are you refilling with ? Does it always request 1 Litre to be added ?

If you drive hard then let the car slow down in gear and then floor the throttle and accelerate hard and you see quite a bit of smoke out the back, or someone following can confirm, then it could be piston ring issues allowing excessive 'blow by'. It could also indicate a faulty / clogged crankcase ventilation system causing crank case gases to be sucked back into inlet manifold and burning off rather than returning to the sump. I think the S63TU set up is like this....

Or it could be turbo seals but not sure on this.

I believe the BMW guideline MAX consumption is 1000 KM per Litre equating to circa 416 Miles per Litre. If you can prove that you are consuming more and the car is still under the factory warranty, in theory they should fit a new engine for you free of charge.

I think I spoke to you about this before. I am quite surprised by the attitude of your dealer. Did you buy the car as a BMW AUC ?

I see black smoke! Also burning large amount of oil consumption every 500-1000 miles being prompted for oil levels at minimum. I do drive hard often and drive in full sport+ mode. Should I be concern?

[M5 London]

Originally Posted by a_bum_bruh

I see black smoke! Also burning large amount of oil consumption every 500-1000 miles being prompted for oil levels at minimum. I do drive hard often and drive in full sport+ mode. Should I be concern?

I presume the car is still under warranty ?

If so what does your dealer say about it ?

[M5 London]

Originally Posted by IM6

how can I press for a new engine?

From what I understand you are consistently consuming more oil than BMW maximum permissible amount.

Have you had the discussion of engine replacement with BMW or your dealer yet ?

[IM6]

Originally Posted by M5 London

From what I understand you are consistently consuming more oil than BMW maximum permissible amount.

Have you had the discussion of engine replacement with BMW or your dealer yet ?

Hi there,
I have addressed this to my contact at BMW HQ. However they will need to be given a fair chance to at least fix the issue by further looking into the engine which will entail stripping it apart. I have found an excellent motor trade specialist solicitor who deals with Mercedes and BMW and knows them all.
He also rest assured me that I have got a strong case.

[M5 London]

Originally Posted by IM6

Hi there,
I have addressed this to my contact at BMW HQ. However they will need to be given a fair chance to at least fix the issue by further looking into the engine which will entail stripping it apart. I have found an excellent motor trade specialist solicitor who deals with Mercedes and BMW and knows them all.
He also rest assured me that I have got a strong case.

I too agree you have a strong case.

Also I have heard of a few S63TU engined cars with replacement engines and at this point I can only think they were replaced under warranty due to excessive oil consumption.

[IM6]

Originally Posted by M5 London

I too agree you have a strong case.

Also I have heard of a few S63TU engined cars with replacement engines and at this point I can only think they were replaced under warranty due to excessive oil consumption.

Lets hope that was the case, do you think its worth appointing this solicitor for a fee of £350?

[IM6]

UPDATE :

HR owen BMW who have my car for last few weeks are now replacing the rocker cover breathers which apparently has a manufacturing defect in the earlier production. This was instructed and cleared by BMW HQ as they are well aware of these issues on m5/m6.
I don't know if it will solve the problem?

[M5 London]

Originally Posted by IM6

UPDATE :

HR owen BMW who have my car for last few weeks are now replacing the rocker cover breathers which apparently has a manufacturing defect in the earlier production. This was instructed and cleared by BMW HQ as they are well aware of these issues on m5/m6.
I don't know if it will solve the problem?

If the breathers are not functioning well and allowing excessive crank case pressure to build up then it will mean higher oil consumption.

Keep us posted on oil consumption post replacement.

[RichardP]

Interested to know what 'early' is!

As I've said in other thread regarding high oil consumption, unless there is a significant and usually obvious fault, high oil consumption is likely to be down to the way the car is run in. These engines do NOT use a lot of oil by design, unless that design involves not running them in correctly!

My M6 GC is a 63 plate, it uses NO oil at all between 10,000 mile changes, 8,5L goes in, 10,000 miles later 8.5L comes out.

[IM6]

Originally Posted by RichardP

Interested to know what 'early' is!

As I've said in other thread regarding high oil consumption, unless there is a significant and usually obvious fault, high oil consumption is likely to be down to the way the car is run in. These engines do NOT use a lot of oil by design, unless that design involves not running them in correctly!

My M6 GC is a 63 plate, it uses NO oil at all between 10,000 mile changes, 8,5L goes in, 10,000 miles later 8.5L comes out.

I agree with you as ive researched a lot and it does depend on the way the engine is broken in.
However requiring a litre at every 350 miles is not right.

[RichardP]

Totally agree, 1L in 1000 miles is not right, let alone 350 miles!

1L in 350 miles is not far off 2 stroke proportions of fuel : oil!!

[M5 London]

Originally Posted by RichardP

Totally agree, 1L in 1000 miles is not right, let alone 350 miles!

1L in 350 miles is not far off 2 stroke proportions of fuel : oil!!

Or like my S62 E39 M5

[RichardP]

I think your E39 M5 should have a second filler flap next to the fuel filler flap, bit like an LPG filler, but so you can add 4L of oil with every fuel fill up!