[Feddersen]

Hi

I was wondering. I have a F30 335i that was build in 2011. I bought it used at 23k miles and from the beginning it consumed oil. Nothing worrying but still more than I have tried in other engines. We also discussed it here: http://f30.bimmerpost.com/forums/sho....php?t=1074877.

The car used more oil the faster I drove it or the heavier the load was.

However, unfortunately my engine decided to eat its crankshaft bearings and I had to get a new engine/turbo and transmission 10 months ago.

Of course I am a bit nervous that my new engine also will fail some time in the future but the new engine is almost not using any oil at all and it looks like I am able to complete a service cycle without refilling it.

Do you think there is any relation from a oil consuming engine and its failure or have I just been unlucky with my first engine? Anyone else also had complete engine failure on the first versions of the N55?

[mr_kay]

My car seems to eat a quart every 10k or so, which has been deemed normal

[F32Fleet]

Originally Posted by Feddersen

Hi

I was wondering. I have a F30 335i that was build in 2011. I bought it used at 23k miles and from the beginning it consumed oil. Nothing worrying but still more than I have tried in other engines. We also discussed it here: http://f30.bimmerpost.com/forums/sho....php?t=1074877.

The car used more oil the faster I drove it or the heavier the load was.

However, unfortunately my engine decided to eat its crankshaft bearings and I had to get a new engine/turbo and transmission 10 months ago.

Of course I am a bit nervous that my new engine also will fail some time in the future but the new engine is almost not using any oil at all and it looks like I am able to complete a service cycle without refilling it.

Do you think there is any relation from a oil consuming engine and its failure or have I just been unlucky with my first engine? Anyone else also had complete engine failure on the first versions of the N55?

Clearly your original engine had a problem (probably tuned) so I don't know why you would think your new one would?

[sicmadek]

I thought the n55 disnt need a catch can?

[mr_kay]

Originally Posted by sicmadek

I thought the n55 disnt need a catch can?

I don't think this is concerning oil loss from blow by, but instead the engine burning oil.

[F32Fleet]

Originally Posted by sicmadek

I thought the n55 disnt need a catch can?

Need is subjective. If you sell them (catch cans) then yes it's an absolute must.

[yoandry]

Originally Posted by mr_kay

My car seems to eat a quart every 10k or so, which has been deemed normal

This is why the OP may have the problem.
Per your post you add a quarter every 10k right, meaning you do your oil change pass that miles. How can you follow the stupid BMW oil change every 10k or 15k miles. You are killing your engine.
Op, just do you oil change at 5k and you wouldn't need to add anything.

[mr_kay]

Originally Posted by yoandry

This is why the OP may have the problem.
Per your post you add a quarter every 10k right, meaning you do your oil change pass that miles. How can you follow the stupid BMW oil change every 10k or 15k miles. You are killing your engine.
Op, just do you oil change at 5k and you wouldn't need to add anything.

Not really. 5k is a bit overkill for a daily, have to do some oil analysis samples. If you're racing or driving hard this is obviously no longer relevant. I usually change my oil when the CBS tells me I have 7-8k left, which would give me about 7-8k on each oil change. I mentioned I put a full quart every 10k or so, meaning that I add about a half quart every 5k...

[Chicken_Joe]

I usually run though a quart every 3-5k miles.

[Feddersen]

Hi all - thanks for the comments. I see I need to add some information.

I bought the car before any tunes were available and it was fully serviced by BMW. I added MPPK at 40k miles. It had done 24k miles when I bought the car and the engine failed at 70k. Normally I added a quart every 3-5k miles and it was serviced every 8-12k miles even though it told me not to service it for the next 6k miles. My mechanic (a BMW service world champion) told me the car was very well serviced but also said that even thought the oil refills were within the tolerance it was a bit on the high side.

[Jadar]

Originally Posted by Chicken_Joe

I usually run though a quart every 3-5k miles.

I use a quart every 1,000 but I found a cracked pcv inlet tube so replaced that and pure inlet all in one shot so I'll monitor and report. I wrote down mileage every time it prompts me to add oil.

[Eldaes]

Originally Posted by Dejan_

I use a quart every 1,000 but I found a cracked pcv inlet tube so replaced that and pure inlet all in one shot so I'll monitor and report. I wrote down mileage every time it prompts me to add oil.

I had this same issue as well. I took mine to the dealership since I'm CPO. they replaced it no prob. no issues since.

[GTBrandon]

Originally Posted by Eldaes

I had this same issue as well. I took mine to the dealership since I'm CPO. they replaced it no prob. no issues since.

How did you know this part was damaged?

[badbread]

FWIW I've been keeping track of my engine oil analysis.

http://*************/oil-analysis-results/

It seems like the average oil change interval that Blackstone receives for a '13 (or N55) is 6,200 miles. The link above includes an oil change at 10,000 miles and at 2,700 miles. I haven't had to add any "top off" oil but I did notice a bit of the blow by oil when I changed out my intake. From the responses I got in this thread, this was a "normal" amount.

http://f30.bimmerpost.com/forums/sho....php?t=1307828

[STR8-6IX]

use a thicker oil. you would likely not have engine failure with 5w40 + much less oil burning.

do you drive aggressively before engine oil is warm?

[Feddersen]

Originally Posted by 6IX-F10-N52

use a thicker oil. you would likely not have engine failure with 5w40 + much less oil burning.

do you drive aggressively before engine oil is warm?

The oil is the one recommended by BMW. I have no idea what it is. I never ever drive aggressively before the engine is warm.

[STR8-6IX]

Originally Posted by Feddersen

The oil is the one recommended by BMW. I have no idea what it is. I never ever drive aggressively before the engine is warm.

switch to one of these:

-motul
-amsoil
-shell rotella t6
-redline oil
liqui moly you should have in denmark. very good quality

and stick to a 5w40. it will slow oil burning and protect your engine better. you probably had an engine failure due to poor quality oil not protecting the bearings.

[bimmer456]

I have seen posts of it being normal to need to add oil on some vehicles. I haven't had to on mine.

[GTBrandon]

Anyone have any experience with BG oil? Heard it was better than most for these cars

[Feddersen]

I actually did consider bringing my own oil and I will certainly reconsider that option. Last time it got Castrol but I don't know the rating. Next time it will be serviced my usual place and if it starts burning oil I might have found the reason for the oil consumption. Then I will also change to the oil to something thicker.

[insanecoder]

Originally Posted by Feddersen

Hi

I was wondering. I have a F30 335i that was build in 2011. I bought it used at 23k miles and from the beginning it consumed oil. Nothing worrying but still more than I have tried in other engines. We also discussed it here: http://f30.bimmerpost.com/forums/sho....php?t=1074877.

The car used more oil the faster I drove it or the heavier the load was.

However, unfortunately my engine decided to eat its crankshaft bearings and I had to get a new engine/turbo and transmission 10 months ago.

Of course I am a bit nervous that my new engine also will fail some time in the future but the new engine is almost not using any oil at all and it looks like I am able to complete a service cycle without refilling it.

Do you think there is any relation from a oil consuming engine and its failure or have I just been unlucky with my first engine? Anyone else also had complete engine failure on the first versions of the N55?

Your previous owner likely pushed/tuned this vehicle hard overloading/wearing the bearings or wear could be consequence of low or unchanged oil
break in your engine properly and change the oil every 6-7.5k miles youll be fine

[Feddersen]

I know the first owner was BMW and yes, it could have taken some beating during test drives. The second owner I don't know but according to the music that was loaded on the harddrive he must have been 50+ ;-)