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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Engine oil for N55 which viscosity ?
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      11-17-2016, 07:57 AM   #1
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Engine oil for N55 which viscosity ?

Hello,

For a N55 engine which viscosity do you advise me ?
I hesitate between :

- Fuchs GT1 5w40 which meets BMW LL04
- Fuchs GT1 5w30 which meets BMW LL04 and Porsche C30
- Castrol Edge Titanium 0w40 which meets BMW LL04

Thank in advance
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      11-18-2016, 06:55 PM   #2
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Use mobile 1 0w40. Quality oil at cheap price and be done with it.
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      11-19-2016, 10:28 AM   #3
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I've been quite happy with Liqui Moly 5w40 for the last 2 oil changes.
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      11-20-2016, 10:00 AM   #4
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I've heard that M1 0w40 no longer BMW LL-01 approved oil. Is it true?

Quote:
Originally Posted by paul223 View Post
Use mobile 1 0w40. Quality oil at cheap price and be done with it.
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      11-20-2016, 12:29 PM   #5
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Quote:
Originally Posted by Sedoy View Post
I've heard that M1 0w40 no longer BMW LL-01 approved oil. Is it true?

Quote:
Originally Posted by paul223 View Post
Use mobile 1 0w40. Quality oil at cheap price and be done with it.
Technically it's no longer approved but I know plenty of people that still run it no problem. I use amsoil 0w40 European formula
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      11-21-2016, 05:42 AM   #6
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The BMW dealer (I live in Germany) does not recommend me to use oils which don't meet LL04 specs.
He said me that the The 3-way catalyst can be damaged...

What do you thing about this ?
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      11-27-2016, 01:52 PM   #7
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Quote:
Originally Posted by Bayerish Reisenden View Post
Hello,

For a N55 engine which viscosity do you advise me ?
I hesitate between :

- Fuchs GT1 5w40 which meets BMW LL04
- Fuchs GT1 5w30 which meets BMW LL04 and Porsche C30
- Castrol Edge Titanium 0w40 which meets BMW LL04

Thank in advance
DO NOT use mobil 1. i wouldnt recommend 0w40 either. your car will be happiest and very smooth with a good quality 5w40 oil.
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      11-27-2016, 07:37 PM   #8
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Quote:
Originally Posted by 6IX-F10-N52 View Post
DO NOT use mobil 1. i wouldnt recommend 0w40 either. your car will be happiest and very smooth with a good quality 5w40 oil.
Yeah, maybe for the N52, not N55.
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      11-27-2016, 10:10 PM   #9
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Quote:
Originally Posted by paul223 View Post
Yeah, maybe for the N52, not N55.
i dont see how the fact they are two different engines has anything to do with wanting to run thinner oil. if anything, doesnt it make sense to use THICKER oil for the higher performance, turbo engine for better protection? I just dont see how 0w-30 is healthy for an engine especially in the long run. all bmw's whether its my N52, an N55 or whatever you want are designed to run with thick oil and have good bearing clearances.
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      11-27-2016, 10:24 PM   #10
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Quote:
Originally Posted by 6IX-F10-N52 View Post
i dont see how the fact they are two different engines has anything to do with wanting to run thinner oil. if anything, doesnt it make sense to use THICKER oil for the higher performance, turbo engine for better protection? I just dont see how 0w-30 is healthy for an engine especially in the long run. all bmw's whether its my N52, an N55 or whatever you want are designed to run with thick oil and have good bearing clearances.
Thick oil is for "loose" engines.... Thinner oil is for "tight" engines...
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      11-28-2016, 08:36 AM   #11
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Quote:
Originally Posted by 6IX-F10-N52 View Post
Quote:
Originally Posted by paul223 View Post
Yeah, maybe for the N52, not N55.
i dont see how the fact they are two different engines has anything to do with wanting to run thinner oil. if anything, doesnt it make sense to use THICKER oil for the higher performance, turbo engine for better protection? I just dont see how 0w-30 is healthy for an engine especially in the long run. all bmw's whether its my N52, an N55 or whatever you want are designed to run with thick oil and have good bearing clearances.
I don't see how you can recommend different viscosity oils for the engine you did not design. BMW engineers and Mobile 1 chemists recommend to use their 0W40, but you recommend other viscosity is nonsense. Use what is recommended by Oil brands or BMW. Don't waste time and money trying to find high performance oil, because engine pistons won't fly away from its housing.
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      11-28-2016, 10:44 AM   #12
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Quote:
Originally Posted by paul223 View Post
I don't see how you can recommend different viscosity oils for the engine you did not design. BMW engineers and Mobile 1 chemists recommend to use their 0W40, but you recommend other viscosity is nonsense. Use what is recommended by Oil brands or BMW. Don't waste time and money trying to find high performance oil, because engine pistons won't fly away from its housing.
So you're the one the designed the engine then? my original message was directed towards the original poster, not for you. I could really care less what you put into your car if you're not gonna at least accept and consider other peoples ideas and opinions. Mobil 1 is shit oil, its watered down and doesnt protect your engine anywhere near as well as castrol would. I dont see any point in looking for racing oil when you can buy something like AMSOIL or Castrol which will protect your bearings just fine. I specified a specific oil weight which is best for your engines, not go look for high performance racing oil.
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      11-28-2016, 11:01 AM   #13
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Quote:
Originally Posted by ezaircon4jc View Post
Thick oil is for "loose" engines.... Thinner oil is for "tight" engines...
yes, 100% agreed. BMW engines have very, very loose bearing clearances. you can run 5w-40 in any engine without a problem, as you should. its the best protection if you run it hard.
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      11-28-2016, 11:33 AM   #14
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Quote:
Originally Posted by 6IX-F10-N52 View Post
So you're the one the designed the engine then? my original message was directed towards the original poster, not for you. I could really care less what you put into your car if you're not gonna at least accept and consider other peoples ideas and opinions. Mobil 1 is shit oil, its watered down and doesnt protect your engine anywhere near as well as castrol would. I dont see any point in looking for racing oil when you can buy something like AMSOIL or Castrol which will protect your bearings just fine. I specified a specific oil weight which is best for your engines, not go look for high performance racing oil.
I wouldn't trust Castrol at all They sued to have mineral oil reclassified as synthetic if it was reformulated. Mobil1 is completely 100% synthetic. I'll stick with the original, 25K mile/1 year oil change interval manufacturer. I'd use Amsoil if I could get it locally (non shipped).

From my '12 OM...

Quote:
Oil types for refilling
Notes
No oil additives
Oil additives may lead to engine damage.

Viscosity grades for engine oils
When selecting an engine oil, ensure that
the engine oil belongs to one of the viscosity
grades SAE 0W-40, SAE 0W-30, SAE 5W-40,
and SAE 5W-30 or malfunctions or engine dam‐
age may occur.◀
The engine oil quality is critical for the life of the
engine.


Approved oil types
Specification
BMW High Performance SAE 5W-30
BMW Longlife-01
BMW Longlife-01 FE
Additional information about the approved
types of oils can be requested from the service
center.
Alternative oil types
If the approved engine oils are not available, up
to 1 US quart/liter of an oil with the following
specification can be added:
Specification
API SM or superior grade specification
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      11-28-2016, 02:25 PM   #15
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Don't use thick oil its bad for turbo lines
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      11-28-2016, 11:01 PM   #16
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Quote:
Originally Posted by ezaircon4jc View Post
I wouldn't trust Castrol at all They sued to have mineral oil reclassified as synthetic if it was reformulated. Mobil1 is completely 100% synthetic. I'll stick with the original, 25K mile/1 year oil change interval manufacturer. I'd use Amsoil if I could get it locally (non shipped).

From my '12 OM...
nonsense, Mobil 1 is garbage. the castrol german formula is fully synthetic and basically some of the best you can get for your car.
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      12-01-2016, 02:47 AM   #17
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So ... What do you advise me ?
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      12-01-2016, 07:10 PM   #18
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Quote:
Originally Posted by Bayerish Reisenden View Post
So ... What do you advise me ?
What the Owner's Manual says...
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      12-01-2016, 08:29 PM   #19
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Quote:
Originally Posted by Bayerish Reisenden View Post
So ... What do you advise me ?
Pick one from suggested type & brand. You will not have any problem. Your engine will fail from craftsmanship before oil lube.
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      12-02-2016, 12:34 PM   #20
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Oil threads are always fun, people love to share their hocus pocus.

Use a high quality FULL SYNTHETIC LL-01 approved oil (if in North America), with regular maintenance intervals and you won't have any issues.

Personally I use Castrol Edge Euro-blend 0w-40, and I plan on using that in any BMW engine so long it holds the LL-01 certification (and obviously unless the engine specifies otherwise).
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