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  #1  
Old 12-05-2013, 09:22 PM
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Thoughts on running TWS 10w60?

just curious to see if anyone has ever ran tws 10w60 motorsport oil in a 4.8is? how did it go if so?
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Old 12-05-2013, 09:46 PM
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60 when hot is definetly too thick of an oil in this engine, considering its recommended 5-30/10-30.

I run 10-40 in my 4.8is, helps with smoke, i dont think id do a 50 let alone 60.

Stick with 10-40 max IMO.
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Old 12-05-2013, 10:34 PM
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+1
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Old 12-05-2013, 10:41 PM
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I wouldn't ever use a 10w60.

I like the 5w for cold starts, myself. I would consider a 5w-40 but probably wouldn't use it as the wider viscosity range has a whole separate set of problems, and the days I want a 5w are in a different season than when I might want a 40. 5w-30 has worked well for me.
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Old 12-06-2013, 10:28 AM
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I wouldn't use TWS (Ten W Sixty) in any BMW besides the M models for which it is recommended.
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Old 12-06-2013, 10:30 AM
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10w-60 is for M models isn't it? I remember my buddy with an E46 M3 told me he needed that oil for his engine.

No more than 10w-40 in the X in my opinion
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Old 12-06-2013, 11:08 AM
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Quote:
Originally Posted by Ricky Bobby View Post
10w-60 is for M models isn't it? I remember my buddy with an E46 M3 told me he needed that oil for his engine.

No more than 10w-40 in the X in my opinion
Yes. I know for sure it is what BMW recommends for the e46 M3. I think it is also recommended for the e39 & e60 M5, e9x M3, e89 Z4M, e63 M6 and Z8.

They may recommend something different for the current M cars though.
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Old 12-06-2013, 12:20 PM
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The 10W-60 was only recommended as a band-aid to rod bearing issues that BMW had on the S54, S65, and S85 engines and their variance.

As everyone has said, I wouldn't use 10W-60 on any engine unless it's absolutely necessary. Depending on the tolerances of your engine, 10W-60 may be worst of getting oil to tight tolerance areas and could cause more harm than good. Besides, why would you want to pay close to $15 a liter for the oil? I'm only using it on my MCoupe because I HAVE to.
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Old 12-06-2013, 12:38 PM
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Quote:
Originally Posted by dkl View Post
The 10W-60 was only recommended as a band-aid to rod bearing issues that BMW had on the S54 & S65 engines and their variance.

As everyone has said, I wouldn't use 10W-60 on any engine unless it's absolutely necessary. Depending on the tolerances of your engine, 10W-60 may be worst of getting oil to tight tolerance areas and could cause more harm than good. Besides, why would you want to pay close to $15 a liter for the oil? I'm only using it on my MCoupe because I HAVE to.
As far as I know, the rod bearing issue only affected models from the very early 2000's. Your Z4 came long after the rod bearings were changed, so you really don't have anything to worry about.

The way I see it, The Castrol TWS has a BMW part # on it, it was designed with imput from BMW for your particular engine, so I'm not sure what would be better.
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Old 12-06-2013, 01:23 PM
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That's not completely accurate. Most believed that the bearing recall during 2003 or so took care of the problem, but that's not the case. The M3 originally came with 5w-30. In addition to the bearing recall, BMW started using 10w-60 at the same time to try to "band-aid" the problem. Many cars that were part of the recall still had to deal with the issue afterward. There have been quite a few Z4M that still have rod bearing issues. I've seen a couple (including the last 2008 model year) that have bearing wear issue. Take a visit to M3forums and ZPost and you'll see plenty of bearing issues reported...still.

But the point for the OP is that 5w-30 is best for our X5s. We shouldn't go any heavier weight, unless there's a reason to do so.

Last edited by dkl; 12-06-2013 at 01:30 PM.
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