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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Oil Change.... Yuck.



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      05-13-2011, 11:10 PM   #1
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Oil Change.... Yuck.

Per my CBS, my oil is good for another 13,000 miles or until July of 2012.


I don't feel comfortable waiting that long, the oil that came out of my car is nasty as hell. Butt dyno shows 500hp gain.



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      05-14-2011, 01:42 AM   #2
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EXACTLY why I change mine at 5K miles!!!
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      05-14-2011, 01:56 AM   #3
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^
same here........
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      05-14-2011, 03:18 AM   #4
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What oil are you running? I am assuming you have 2k miles on your oil? How many miles do you have on the car and did you recently change oil?
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      05-14-2011, 07:16 AM   #5
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Not sure what you are trying to say here. Oil is "nasty" when you change it, regardless if it's been in the engine 3,000 or 15,000 miles. It is oil, it runs around a hot engine, picks up contaminates, and gets dirty. It is supposed to be “nasty”.

What you need to understand about oil is that it never loses its lubricating properties, what does happen is the oil gets contaminated, and then begins to sludge. Once sludge starts, it clogs the oil passages to the internal engine parts, which are then starved of oil and begin to prematurely wear and get out of tolerance. Most people think the oil, as it gets dirty, becomes abrasive and causes wear, which is not the case.
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      05-14-2011, 09:08 AM   #6
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No clue how many miles were on this oil; I just know the dealer said it was fine because the CBS said it was fine. I personally put 4k on the car since I purchased it in Feb..
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      05-14-2011, 09:16 AM   #7
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      05-14-2011, 10:03 AM   #8
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Quote:
Originally Posted by ENINTY View Post
Not sure what you are trying to say here. Oil is "nasty" when you change it, regardless if it's been in the engine 3,000 or 15,000 miles. It is oil, it runs around a hot engine, picks up contaminates, and gets dirty. It is supposed to be “nasty”.

What you need to understand about oil is that it never loses its lubricating properties, what does happen is the oil gets contaminated, and then begins to sludge. Once sludge starts, it clogs the oil passages to the internal engine parts, which are then starved of oil and begin to prematurely wear and get out of tolerance. Most people think the oil, as it gets dirty, becomes abrasive and causes wear, which is not the case.
There's no harm in being OCD about; I did it for peace of mind - knowing that I was unsure of the mileage/age of the existing oil.

My last car required oil changes every 3750 miles!


Here's a bad BMW engine sludge thread:

http://forums.bimmerforums.com/forum....php?t=1281659
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      05-14-2011, 11:37 AM   #9
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LOL..this is ridiculously funny.
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      05-14-2011, 11:40 AM   #10
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Quote:
Originally Posted by timmahh View Post

My last car required oil changes every 3750 miles!


Here's a bad BMW engine sludge thread:

http://forums.bimmerforums.com/forum....php?t=1281659
If you follow the story along with what was disclosed on BITOG the vehicle was not maintained in accordance with BMW maintenance intervals.
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      05-14-2011, 01:55 PM   #11
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Quote:
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LOL..this is ridiculously funny.
..hah?


Quote:
Originally Posted by Socom View Post
If you follow the story along with what was disclosed on BITOG the vehicle was not maintained in accordance with BMW maintenance intervals.
I'm well aware of that.. I just remember seeing a sludge bmw engine thread a while back and when the guy above said sludge it reminded me of it. Don't connect the two.
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      05-16-2011, 01:27 PM   #12
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but if BMW says its still cool, then it should be cool.....they made the car so they would know
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      05-18-2011, 12:08 AM   #13
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Quote:
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but if BMW says its still cool, then it should be cool.....they made the car so they would know
i'm at 93,000 miles.....and BMW says my transmission fluid is "lifetime"....

i'm planning to keep my car to 300,000 miles.....
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      05-18-2011, 05:12 AM   #14
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Quote:
Originally Posted by NaTuReB0Y View Post
i'm at 93,000 miles.....and BMW says my transmission fluid is "lifetime"....

i'm planning to keep my car to 300,000 miles.....
BMW states to change AT fluid at 100K miles.
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      05-18-2011, 08:07 AM   #15
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Quote:
Originally Posted by NaTuReB0Y View Post
i'm at 93,000 miles.....and BMW says my transmission fluid is "lifetime"....

i'm planning to keep my car to 300,000 miles.....
Just changed mine at 94k, it left me stranded, overheating, small leak and really dirty fluid. You may want to get it changed along with the pan/filter.
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      05-18-2011, 09:02 AM   #16
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Quote:
Originally Posted by TrackRat View Post
A UOA does not however tell you how well the oil lubricates your engine. To determine how well an oil lubricates your BMW gas engine, you need to run the comprehensive LL-01 oil test sequence.
why does it cost $500,000 to run the oil in a 2001 M54 for 370 hours?
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      05-18-2011, 09:07 AM   #17
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i change my oil every 7,500 miles.

im also a firm believer in NOT servicing AT's. i feel that the transmission picks up particles that get lodged in certain spots, and the transmission gets used to that. changing the oil can dislodge these particles and cause problems in the future.
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      05-18-2011, 12:19 PM   #18
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Quote:
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i change my oil every 7,500 miles.

im also a firm believer in NOT servicing AT's. i feel that the transmission picks up particles that get lodged in certain spots, and the transmission gets used to that. changing the oil can dislodge these particles and cause problems in the future.
There is some logic to what you say, but this is not a good long term maintenance plan. It is true if you have a really high mileage AT that has begun to deteriorate to the point clutch plates are disintegrating a fluid change may dislodge some of that crud and cause problems, but the AT would need to be in pretty bad shape anyway for this to be an issue. The better plan IMO is to do regular fluid changes before the AT gets to that point.
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      05-18-2011, 12:35 PM   #19
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good point.. i guess when i get to 100k i will have a decision to make.
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      05-18-2011, 04:31 PM   #20
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Quote:
Originally Posted by Bcube View Post
BMW states to change AT fluid at 100K miles.
what page in the manual? mine says lifetime.............
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      05-18-2011, 05:44 PM   #21
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100k means lifetime, I emailed 5 indy shops about a quote non have got back to me...
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      05-18-2011, 08:45 PM   #22
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100k means lifetime, I emailed 5 indy shops about a quote non have got back to me...
please keep me updated on the indy shops.....i'm in the 909 area too

thanks.....
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