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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N47 and N57 Turbodiesel Engine / Drivetrain / Exhaust Modifications > Crazy oil consumption (1L/2000km) - 318d N47
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      09-14-2021, 02:09 PM   #23
n0nee
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Quote:
Originally Posted by hpopmds View Post
So, more than a year after, and the data i got, i am now waiting to decide the final solution: a DPF replacement or elimination and reprog.
Hope soon i share the outcome
A very weird thing is, I sent my car to a BMW "specialist" and they unclogged (wasn't fully clogged, just very bad) the DPF by doing a 50m regen at 3200RPM.

My EGR was also stuck (I get a warning in my car saying "GRUPO PROPULSOR" which I don't know the translation to English) and they cleaned it.

After 2k KM, I had to add oil again and the warning about "GRUPO PROPULSOR" which is usually related to the EGR is turned on again

This time I didn't care, since I need the car for my business and haven't tried to fix it yet.

After 2.5k KM with the light on and adding new oil, I checked today the oil level and it says full???

I'm deeply confused by this. I'll check in some hours what errors my car is throwing to see what that light is about.
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      09-14-2021, 03:31 PM   #24
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Quote:
Originally Posted by n0nee View Post
A very weird thing is, I sent my car to a BMW "specialist" and they unclogged (wasn't fully clogged, just very bad) the DPF by doing a 50m regen at 3200RPM.

My EGR was also stuck (I get a warning in my car saying "GRUPO PROPULSOR" which I don't know the translation to English) and they cleaned it.

After 2k KM, I had to add oil again and the warning about "GRUPO PROPULSOR" which is usually related to the EGR is turned on again

This time I didn't care, since I need the car for my business and haven't tried to fix it yet.

After 2.5k KM with the light on and adding new oil, I checked today the oil level and it says full???

I'm deeply confused by this. I'll check in some hours what errors my car is throwing to see what that light is about.
What's the mileage of your car? (mine has 195.000km)
(if you find a solution, please share with us)

Last edited by hpopmds; 12-19-2021 at 09:14 AM..
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      12-11-2021, 09:10 AM   #25
utab007
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Hi, did you find the issue? I also have 318d se F30 auto 2013 year
In my case I found the oil level would run low faster when I run it in sports mode. But when I run in eco or normal mode it seems to last much longer before I need to top up. Usually close the oil change service interval
Like you I can’t see any leaks and I also had dpf issues but don’t think it’s related to oil consumption.
Would be interested to know if you found your issue

Thanks
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      12-19-2021, 08:36 AM   #26
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Quote:
Originally Posted by utab007 View Post
Hi, did you find the issue? I also have 318d se F30 auto 2013 year
In my case I found the oil level would run low faster when I run it in sports mode. But when I run in eco or normal mode it seems to last much longer before I need to top up. Usually close the oil change service interval
Like you I can’t see any leaks and I also had dpf issues but don’t think it’s related to oil consumption.
Would be interested to know if you found your issue

Thanks
Still didn't get into any definitive conclusion, but after DPF and EGR off, and air intake decarb, the car is much smoother, powerfull and economic.
Also i did try an oil catch can for 300 kms, but didn't catch really nothing, so i put the breather tube again back to its place.
After 1300km from last oil change, the level maintains (so far). I need to wait for more kms.
But i did get into the conclusion that the intercooler pipe (before intake) its a little moisturised with a fine coat of oil when i travel for long distance on highway. In the city, the pipe dries completelly again. So, i think i have a small turbo leak, but don't know if it is normal or if it is sufficient to drink 1L/3000km.
I also suspect that the clogged DPF increased the inner pressure and blowed oil from the turbo seals into the intake (or the exhaust too). I don't know if now (after DPF off), the pressure releases and the oil seal are back to their normal function.
So, let's wait to do some more kms and draw a conclusion (maybe).

Last edited by hpopmds; 12-19-2021 at 08:51 AM..
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      12-21-2021, 03:23 PM   #27
utab007
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To me something like the piston seals would make more sense. If the combustion chamber has carbon build up that could allow some oil to come through and burn
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      04-19-2022, 11:00 AM   #28
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Small update:
Slight improvement but the oil comsumption issue remains (1L after 4000km of last oil change).
I did compare my intercooler pipe with some identical of my friend's car, and checked that the fine coat of oil is also on his pipe, but he has no oil comsumption. So, i abandoned the turbo option. The main diference between my engine and my freid's is the vapour/smoke that comes out from the oil cup. So..... it will be the damned piston rings!?
Well, next time i will try a last resort and replace the oil with 5w40 LL4, instead of 5w30, and see if there's some improvement.
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      05-11-2022, 11:07 AM   #29
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Quote:
Originally Posted by hpopmds View Post
HELP! please. Where can the oil go?
a) No leaks under the car.
b) No smoke in any occasion, and low blowby.
c) Oil burns more on long trips (not in the city).
d) Regens after 100km, and after a regen, soot is rising very quick.
e) Oil is frequently changed and is LL4.

Assuming there's an internal leak causing oil burn, and that the DPF catches the smoke, only the next 3 items are plausible (i think):
1- Turbo leak
2- Piston rings wear
3- Valve seals

Can someone help me please diagnosing?
(my car went to 3 diferent workshosps, including BMW dealer, but they didn't make any test (compression, turbo, etc). They just changed the oil).
It's probably the piston rings.

You can read here (spanish forum): https://www.bmwfaq.org/threads/cosum...os-14.1015202/

Cheers.
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      05-11-2022, 03:02 PM   #30
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Quote:
Originally Posted by hpopmds View Post
Small update:
Slight improvement but the oil comsumption issue remains (1L after 4000km of last oil change).
I did compare my intercooler pipe with some identical of my friend's car, and checked that the fine coat of oil is also on his pipe, but he has no oil comsumption. So, i abandoned the turbo option. The main diference between my engine and my freid's is the vapour/smoke that comes out from the oil cup. So..... it will be the damned piston rings!?
Well, next time i will try a last resort and replace the oil with 5w40 LL4, instead of 5w30, and see if there's some improvement.
Oil vapour emanating from the oil filler is perfectly normal. Oil at 100C is going to emit some vapour/smoke. You only need to worry if the smoke is puffing like a steam train.

You can perform a rudimentary check for blow by :

With the engine running at idle rpm, unscrew the oil filler cap but leave it in position.
Normal = the cap will vibrate due to the engine running but the cap won't 'blow off' the rocker cover.
Abnormal = vapour/smoke 'puffing' from the oil filler dislodges the filler cap causing it to not stay in position 'in' the filler hole.
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      05-11-2022, 04:48 PM   #31
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I agree with Watsey as ALL diesels in my household, N47 328d, N57 X5 35d, and CKRA TDI engine all have some blowby from the oil filler hole and emanate vapor when engine is hot especially if you point a flashlight (or torch for those of you on the other side of lake). And it has done all of that since new with zero to negligible oil consumption on all 3 vehicles. But I agree, the blowby is strong but not strong enough to blow the unscrewed cap off that was left in place.
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      09-05-2023, 01:26 PM   #32
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Beware beware

All of you reading this.
Problems are with the bmw f30 316d and 318d models.

This model has a problem with the piston rings. Good mechanics know about this mistake.

The 320d doesn't have these issues

Just changing the chain and piston rings on my 318d
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      09-09-2023, 05:44 AM   #33
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Yeah that is a quite likely if the oil isn't changed regularly and the piston rings are no longer rotating in the bores because they are stuck with carbon. I would also check the cylinder walls for scoring if that's the case. Rings that don't rotate can leave gouging marks in the cylinders.

FWIW, I change my oil every 3-4000 miles. Crazy I know but the amount of soot that gets into the oil is also crazy. It's very cheap insurance.

The blow by vapour reduced significantly when I switched from the dealer 0W30 Shell Helix stuff to 5W40 Fuchs GT1 Flex 3 LL-04.
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      11-24-2023, 01:05 PM   #34
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Quote:
Originally Posted by hpopmds View Post
Small update:
Slight improvement but the oil comsumption issue remains (1L after 4000km of last oil change).
I did compare my intercooler pipe with some identical of my friend's car, and checked that the fine coat of oil is also on his pipe, but he has no oil comsumption. So, i abandoned the turbo option. The main diference between my engine and my freid's is the vapour/smoke that comes out from the oil cup. So..... it will be the damned piston rings!?
Well, next time i will try a last resort and replace the oil with 5w40 LL4, instead of 5w30, and see if there's some improvement.
did you solve the high oil consumption and the problem with the DPF?
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      11-26-2023, 09:57 AM   #35
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Ive changed the piston rings and the chain. dpf was destroyed by oil

Now after 5.000km oil is at max... consumption dropped from 6.5 to 4.7l
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