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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #76  
Old 10-29-2012, 12:17 PM
anE934fun anE934fun is offline
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Originally Posted by sunny5280 View Post
Again: I have seen no evidence showing adhering to BMW's recommend oil change intervals reduces engine life. If you have some data to support as much then I'd be very interested in seeing it.
To paraphrase Kilgore at post #74 and DSX at post #32, I have no interest in going there with you. There is data on engine internals and oil that fails its lubricity specification on the Internets. If you are truly interested, you can hone your search skills. Google (or Bing) can be your friend.

Have a good day/afternoon/evening.
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  #77  
Old 10-29-2012, 12:38 PM
Tom K. Tom K. is offline
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Originally Posted by anE934fun View Post
To paraphrase Kilgore at post #74 and DSX at post #32, I have no interest in going there with you. There is data on engine internals and oil that fails its lubricity specification on the Internets. If you are truly interested, you can hone your search skills. Google (or Bing) can be your friend.

Have a good day/afternoon/evening.
Since a Google seacrh on "BMW Oil related failure" returns primarily oil pump issues but not oil issues, perhaps you would be so kind as to provide the relevant URLs?

TIA.
Tom
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  #78  
Old 10-29-2012, 03:55 PM
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Kilgore Trout Kilgore Trout is offline
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Originally Posted by anE934fun View Post
To paraphrase Kilgore at post #74 and DSX at post #32, I have no interest in going there with you. There is data on engine internals and oil that fails its lubricity specification on the Internets. If you are truly interested, you can hone your search skills. Google (or Bing) can be your friend.

Have a good day/afternoon/evening.
Funny thing about you, even when we disagree you always come across as reasonable. I appreciate that about interacting with you.
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  #79  
Old 10-29-2012, 04:44 PM
sunny5280 sunny5280 is offline
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Originally Posted by anE934fun View Post
To paraphrase Kilgore at post #74 and DSX at post #32, I have no interest in going there with you. There is data on engine internals and oil that fails its lubricity specification on the Internets. If you are truly interested, you can hone your search skills. Google (or Bing) can be your friend.

Have a good day/afternoon/evening.
I am not Kilgore nor am I DSX. If you don't want to provide any supporting evidence that's your choice. Until such time as there is some supporting evidence to the contrary I'll have no choice but to conclude you're wrong.
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  #80  
Old 10-29-2012, 04:44 PM
CALLAWAY845 CALLAWAY845 is offline
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I think one thing is for certain, Mike Miller's document on service is a very compelling read, and he provides a very interesting historical perspective on the issue. I just read it, and it opened my eyes on quite a few things.
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  #81  
Old 10-29-2012, 10:23 PM
anE934fun anE934fun is offline
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Funny thing about you, even when we disagree you always come across as reasonable. I appreciate that about interacting with you.
Reasonable people can always be reasonable. It is those on the extreme that manage to make a mess of things for everyone else.
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  #82  
Old 12-04-2012, 09:04 AM
usaret usaret is offline
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Originally Posted by sunny5280 View Post
Again: I have seen no evidence showing adhering to BMW's recommend oil change intervals reduces engine life. If you have some data to support as much then I'd be very interested in seeing it.
http://blog.bavauto.com/8476/bmw-and...nge-intervals/
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  #83  
Old 12-04-2012, 02:37 PM
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Whoa, that's one heck of a can o' worms you've ressurrected this thread with.
Avoiding that kind of sludge is why I tell all my customers to max intervals at 8K. Of course, I'm just speaking from experience, not lab projections, so don't take my word for it.

Last edited by DSXMachina; 12-04-2012 at 04:39 PM.
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  #84  
Old 12-04-2012, 03:19 PM
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Bav Autosports comes up with all sorts of recommendations, not surprisingly all of which suggest pouring more money into maintenance (which, btw, they make a pretty penny on). And, while most folk here would be sympathetic to their recommendation for more frequent oil changes, some would no doubt view some of their suggests with considerable skepticism. For example, this same source recommends rotating tires every 5,000 miles.

I still think Sunny's original point stands. I will continue to change my oil every 7,500 miles. But, I agree with Sunny that there is no real empirical evidence that longer intervals harm the car (just anecdotal stuff like the above).,
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  #85  
Old 12-05-2012, 03:52 AM
usaret usaret is offline
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http://www.bellperformance.com/blog/...ine-Oil-Sludge

http://www.madisonmotorwerks.com/services/oil/

http://www.schleeter.com/oil-sludge.htm
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  #86  
Old 12-05-2012, 04:00 AM
usaret usaret is offline
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Originally Posted by DSXMachina View Post
Whoa, that's one heck of a can o' worms you've ressurrected this thread with.
Avoiding that kind of sludge is why I tell all my customers to max intervals at 8K. Of course, I'm just speaking from experience, not lab projections, so don't take my word for it.
Yeah I know. But he asked for proof.
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  #87  
Old 12-05-2012, 09:14 AM
sunny5280 sunny5280 is offline
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Yeah I know. But he asked for proof.
None of the links you provided are proof. They merely talk about engine sludge. Nothing proving BMW's change interval causes problems.
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  #88  
Old 12-05-2012, 09:46 AM
usaret usaret is offline
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Originally Posted by sunny5280 View Post
None of the links you provided are proof. They merely talk about engine sludge. Nothing proving BMW's change interval causes problems.
There is no point in trying to convince anyone who thinks he alone knows best.
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  #89  
Old 12-05-2012, 11:01 AM
usaret usaret is offline
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More links for those that are interested. I'm retired and have a lot of time on my hands.

http://www.autoscope.co/car-news/why...re-frequently/

http://www.munichmotorsport.com/wordpress/?page_id=416

http://www.ultimateautoworks.com/faq.html
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  #90  
Old 12-05-2012, 11:03 AM
Yeoman Yeoman is offline
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Originally Posted by usaret View Post
There is no point in trying to convince anyone who thinks he alone knows best.
Oil sludge can equally result from a number of other factors, such as running with low oil levels, running with incorrect viscosity oil, EGR issues, and from coolant or fuel leakage into the crankcase.

Anyone who thinks BMW is setting 15K intervals for marketing/sales purposes has a screw loose. BMW is not Hyundai.. people who have the means to purchase a $40K+ vehicle are not worried about paying an extra $100 every 15K miles.

But by all means keep bending over for the oil companies.. BMW engineers don't have a clue.

Last edited by Yeoman; 12-05-2012 at 11:15 AM.
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  #91  
Old 12-05-2012, 11:03 AM
sunny5280 sunny5280 is offline
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There is no point in trying to convince anyone who thinks he alone knows best.
All you need to do to convince me is provide proof. What you have provided is nothing more than general discussion.
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  #92  
Old 12-05-2012, 11:06 AM
Yeoman Yeoman is offline
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Originally Posted by usaret View Post
Wow, auto repair shops encouraging you to come in more often so they can take your money? Sounds totally unbiased to me.

Oil and engine technology have advanced greatly since Jiffy Lube began brainwashing people into 3K intervals in the 80s. I know old people are set in their ways, but you should spend some of your spare time over at bobistheoilguy.com and educate yourself.

Last edited by Yeoman; 12-05-2012 at 11:13 AM.
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  #93  
Old 12-05-2012, 11:22 AM
usaret usaret is offline
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Just passing along some info that I thought was relevant. What folks conclude from it is up to them. Have a good one.
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  #94  
Old 12-05-2012, 11:42 AM
Yeoman Yeoman is offline
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Just passing along some info that I thought was relevant. What folks conclude from it is up to them. Have a good one.
You should be golfing
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  #95  
Old 12-05-2012, 03:43 PM
ard ard is offline
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Originally Posted by sunny5280 View Post
None of the links you provided are proof. They merely talk about engine sludge. Nothing proving BMW's change interval causes problems.
And you can provide no proof that BWMs recommended intervals are adequate.

Stalemate.

Carry on with the verbal masturbation- some folks like it I guess.
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  #96  
Old 12-05-2012, 04:14 PM
Yeoman Yeoman is offline
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And you can provide no proof that BWMs recommended intervals are adequate.
So you're saying the same BMW engineers who spent countless hours designing, engineering, testing and manufacturing these engines have no clue what is an adequate interval? Can you really be that daft, or just generally a self righteous tool in the face of common sense?
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  #97  
Old 12-05-2012, 05:52 PM
ctuna ctuna is offline
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I think marketing determines the Intervals.

I think marketing determines the Intervals.
Also do you think that just because they have degree they don't make mistakes.
We have the 4 year HPFP problem. The Intake build up problem for DI engines.
The run flat tire problem.
What will they say when marketing says they won't get there bonus if they don't deliver
on the stuff that marketing wants.

Last edited by ctuna; 12-05-2012 at 05:59 PM.
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  #98  
Old 12-05-2012, 06:10 PM
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Kilgore Trout Kilgore Trout is offline
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And you can provide no proof that BWMs recommended intervals are adequate.

Stalemate.

Carry on with the verbal masturbation- some folks like it I guess.

Sunny never claimed to have proof of anything. His exact statement:

"I have seen no evidence showing adhering to BMW's recommend oil change intervals reduces engine life. If you have some data to support as much then I'd be very interested in seeing it."

His basic point is that everybody is quick to assume that more frequent oil changes help, but there is absolutely no hard evidence of this. Its all anecdotal reports, posts on repair chat boards, advice from folk who want to sell you parts and oil. So, Sunny is saying that in the absence of hard evidence, he is sticking with what BMW suggests.

Personally, I'm going with Mike Miller because it just makes sense to me. But, I am very sympathetic to Sunny's point, and think his view is reasonable and logical. I also give him credit for being willing to stand up with an unpopular perspective.
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  #99  
Old 12-05-2012, 06:12 PM
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Kilgore Trout Kilgore Trout is offline
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Thanks for bringing a smile to my afternoon. LOL.
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  #100  
Old 12-05-2012, 06:46 PM
Yeoman Yeoman is offline
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Originally Posted by ctuna View Post
I think marketing determines the Intervals.
Also do you think that just because they have degree they don't make mistakes.
We have the 4 year HPFP problem. The Intake build up problem for DI engines.
The run flat tire problem.
What will they say when marketing says they won't get there bonus if they don't deliver
on the stuff that marketing wants.
You actually think the BMW is going to risk pissing off a customer base, attracting poor publicity, reliability ratings and law suits while at the same time ensuring they don't get the customer back in the showroom to spend another $50K+ because they want to save them a $100 oil change every six months? Really? Talk about a marketing nightmare..

btw, BMW doesn't manufacture HPFPs.
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