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View Poll Results: What oil viscosity are you using?
10w60: the factory knows best 158 74.88%
0w40 30 14.22%
5w50 23 10.90%
Voters: 211. You may not vote on this poll

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      01-30-2017, 04:43 PM   #1
GT3fan
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What oil viscosity are you using? 10w60/0w40/5w50?

I know there are numerous threads on oil choices and the majority is running Castro TWS 10w60 since it's recommended by BMW.

However, I have seen various discussions stating 0w40 is a better option due to the very tight bearing tolerances and other technical reasons I personally don't understand. I also saw comments that 5w50 is a good compromise between the other two weights and should be considered. I am not an engineer so I don't profess to have an educated reason for possibly straying away from the OEM 10w60 choice.

I am about to change my oil and thought I would ask before ordering a couple cases of Castrol TWS 10w60 if another weight is better suited for our engines. This is NOT to save money. I just want to use the best oil for engine longevity and reduce rod bearing wear if possible. My car is a 2011.

I do not track my car and primarily use it for commuting and spirited driving.

If you do use something different, please explain why.

thanks!

Last edited by GT3fan; 01-30-2017 at 04:57 PM..
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      01-30-2017, 05:16 PM   #2
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other: motul 15w50, much better additives to the Castrol, slightly lighter than factory but in the same heavy weight vein.
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      01-30-2017, 05:28 PM   #3
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Quote:
Originally Posted by Mvy View Post
other: motul 15w50, much better additives to the Castrol, slightly lighter than factory but in the same heavy weight vein.
I should have added an "Other" option. Thanks for your feedback.
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      01-30-2017, 07:20 PM   #4
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I run Mobil 1 5w50. Great oil that was just recently updated to a more modern boron add pack and LNG base oil. Not sure why you'd want to go to an oil with a higher cold crank viscosity than stock... 15w don't make sense on this engine
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      01-30-2017, 09:37 PM   #5
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EVOO
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      01-30-2017, 10:31 PM   #6
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10w60 Castrol on mine from 8km ( odometer ) and it still sounds like new.

Last edited by ruff1017; 01-31-2017 at 02:04 PM..
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      01-30-2017, 11:21 PM   #7
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Quote:
Originally Posted by Flying Ace View Post
EVOO
Cheaper too!
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      01-31-2017, 12:58 AM   #8
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Quote:
Originally Posted by ruff1017 View Post
10w60 Castrol on mine from 8km ( odometer ) and it still sounds like new.
But your bearings are probably like a 80k car.
















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      01-31-2017, 09:00 AM   #9
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I have been considering Mobil 5w50. To the few who are running this oil where are you buying it? I believe Napa Auto parts sells it. Are there other major retailers that carry it?
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      01-31-2017, 12:20 PM   #10
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10w60 but not Castrol. Using the Shell Helix kit from ECS. Pricier than most other options but car seems to love it. I've also previously stated that some brands just sit better with me than others and Shell is one of them.
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      01-31-2017, 01:26 PM   #11
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I switched to Mobil1 0W-40 from Castrol 10W-60. No noticeable differences, live in Cali btw.
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      02-01-2017, 09:54 AM   #12
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Factory 10w-60 for now but would switch to Motul 15w50 if I planned on doing more track events.
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      02-01-2017, 03:07 PM   #13
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Luqimoly 10w-60. Mine seems to like it.
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      02-01-2017, 06:07 PM   #14
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Quote:
Originally Posted by play2lose View Post
I switched to Mobil1 0W-40 from Castrol 10W-60. No noticeable differences, live in Cali btw.

you probably hear the valves now?

what is up with people disregarding manufacturer recommendations like this?
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      02-01-2017, 06:22 PM   #15
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I use Crisco Vegetable oil. Real cheap.
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      02-02-2017, 07:59 AM   #16
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0W40 in the winter, 10W60 in the summer
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      02-02-2017, 09:04 AM   #17
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Is Castrol Edge Gold 10w60 the same as Cstrol TWS?
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      02-02-2017, 11:12 AM   #18
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Mobil 0-50 here in FL, engine seems to spin well with this oil
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      02-02-2017, 01:28 PM   #19
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      02-02-2017, 01:58 PM   #20
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10w60. Sorry, I gotta go with the BMW engineers on this one, I think their R&D budget is a little higher than mine.
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      02-02-2017, 02:48 PM   #21
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Quote:
Originally Posted by AMG2M3 View Post
Is Castrol Edge Gold 10w60 the same as Cstrol TWS?
No. So far, the only oil that I have found to be identical in formula to TWS, that isn't explicitly labeled as TWS, is Castrol Edge Professional 10w60

http://www.m3post.com/forums/showthread.php?t=1329082

Last edited by kamber; 02-03-2017 at 01:45 AM..
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      02-02-2017, 03:03 PM   #22
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i was using 0w40 M1 when I had mine and it was great because it heated up faster. I sent my oil to black stone at every change and everything was always on point with no excessive wear materials.
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