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Old 06-01-2004, 11:50 AM   #1
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transmission fluid/oil and filter?

Guys,

How often do we have to change our transmission fluid and/or transmission oil? Does our transmission have a filter that also need replacement?

Any insight would be greatly appreciated.

Thanx
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Old 06-01-2004, 11:52 AM   #2
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i heard you not supposed to change the transmission fluid....
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Old 06-01-2004, 12:08 PM   #3
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i heard you not supposed to change the transmission fluid....

AceDaking,

Yeah, I heard something in that effect also. How about the transmission filter then??? Do you know anything about that?>
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Old 06-01-2004, 12:23 PM   #4
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Transmission oil is supposedly a lifetime fluid. However, I change mine about every 2 years for my MT. I dont know what the story is for auto though.
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Old 06-01-2004, 12:52 PM   #5
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trannies filled with crock

As with everything on BMW maintenance, if you really care about keeping it for a long time, ignore their "recommended" intervals and change all fluids more often. There is no harm done in replacing it, and invariably more harm done eventually in keeping the stock fluid for too long.

I would suggest the auto trans fluid be changed somewhere in the 50-60K (or 4-5 year) range.

The fluid filter is cleaned, not replaced. It is a fine mesh screen. Buy a Bentley if you plan to do it yourself.

Hope that helps.
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Old 06-01-2004, 12:58 PM   #6
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"Lifetime Fliud" = For the life of the tranny. Modern trannies are only built for a service life of around a 100k miles. If treated properly they can obviously last longer.... and new fluid every 60k or so would definately help
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Old 06-01-2004, 12:58 PM   #7
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BMW's definition of "lifetime" is 100,000 miles. If you plan on keeping it longer than that, get it changed much earlier. 30,000 to 50,000 is a good time. 30K if you're paranoid (hey, it's relatively cheap insurance). 50K for most people.

Manual trannies might be earlier. Supposedly it helps with the shifting feel so maybe you wanna do it every 30K just for that.
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Old 06-01-2004, 01:03 PM   #8
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THANX for everyone that replied to this thread.

ONE QUESTION THOUGH:

What about our transmission filter? Someone told me about this. Is there really a thing in our car?
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Old 06-01-2004, 01:10 PM   #9
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What about our transmission filter? Someone told me about this. Is there really a thing in our car?

It's a metal screen that is a strainer that you just clean off. I can send you the service manual instructions via e-mail if you have broadband.
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Old 06-01-2004, 01:18 PM   #10
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Our ZF transmissions only take a special type of fluid... Texaco 8072B. I'm looking all over the net to see if there are any other manufacturers who make a fluid that conforms to this spec, with no luck. Anyone know where I could find some? I'd much rather put Amsoil or Redline in...
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Old 06-01-2004, 01:38 PM   #11
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It's a metal screen that is a strainer that you just clean off. I can send you the service manual instructions via e-mail if you have broadband.
You got PM =)
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Old 06-01-2004, 01:49 PM   #12
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i change my tranny and diff fluid every 25k
just clean the screen for tranny if at all

hf
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Old 11-05-2008, 05:03 PM   #13
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I have a 2003 325i auto trans and I cannot see a fill plug or drain plug?...So I can't change my fluids. I would like to though If I can access them. Also I think there's a temperature requirement that you need to watchout for during the process. any comments on this?/

Appreciate any info.


thanks
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Old 11-05-2008, 05:31 PM   #14
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I'd never touch changing my transmission fluid, my opinion on that is if it ain't broke don't fix it.

I've heard to many stories of issues after changing the transmission fluid, including complete failure of transmission/gearbox... FK THAT, leave it.
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Old 11-05-2008, 07:17 PM   #15
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The fill hole is on the driver side(US). See if you can remove it first before the removing the drain plug.

There is some spec on the car needing to be level, warm up, shifted around, and then fill until it slip out of the fill hole. Another way, if I drained 5 qt. I'll put back 5 qts.
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Old 11-05-2008, 07:23 PM   #16
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Holly thread revival batman
And one where the member is banned none the less. bonus points.
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Old 11-05-2008, 08:35 PM   #17
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I'd never touch changing my transmission fluid, my opinion on that is if it ain't broke don't fix it.

I've heard to many stories of issues after changing the transmission fluid, including complete failure of transmission/gearbox... FK THAT, leave it.
my guess is your fluid is BEGGING you to "fix it" although it wont scream "im broke"...change it if you can, but not if you're over 60k...too late

and sick thread revival. wtf
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Old 11-05-2008, 11:35 PM   #18
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If you have a manual transmission (I have a 328Ci 5-Speed Manual), can I change the tranny fluid at 97k miles if it's never been changed before? What about the differential fluid? I'm not talking about a "flush", just a drain and fill. Thanks.
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Old 11-05-2008, 11:42 PM   #19
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If you have a manual transmission (I have a 328Ci 5-Speed Manual), can I change the tranny fluid at 97k miles if it's never been changed before? What about the differential fluid? I'm not talking about a "flush", just a drain and fill. Thanks.
there are no issues with changing the diff or manual tranny fluids. easy to do.

it's only the automatics that are known to be hit or miss.
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Old 10-16-2011, 09:13 PM   #20
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I have a 330ci with 62000 miles on it. Is it ok to change the tranny fluid and differential fluid. They have never been changed before
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