'03 2.5L auto tranny service - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 04-09-2006, 11:49 PM
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'03 2.5L auto tranny service

Is there a difference between what the dealer recommends and what is best for the tranny? I have 30K on my '03 325i and I don't want the auto tranny crapping out at 100K because of lack of maintenance. Thanks!
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#2 (permalink) Old 04-10-2006, 11:39 AM
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The folks over at Bavarian Autosport recommend a tranny drain-n-fill every 60,000 miles max. I believe they noted not to flush, only to drain. I've heard flushing can lead to dried gaskets and seals.
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#3 (permalink) Old 05-20-2006, 10:52 AM
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Thanks for your reply! I came back to the board after more than a month away to see if anyone responded.

I drain and refill a portion of my ATF in my Isuzu Rodeo every 15K and the original trans has 150K and performs flawlessly. I think I'll drain and refill every 30K on this vehicle. Any tips appreciated...
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#4 (permalink) Old 05-20-2006, 11:15 AM
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I've searched...
Anyone have a link to a DIY on ATF changeouts for the auto tranny in an '03 325i? Drain from the bottom of the pan and refill at the front of the engine bay? Which ATF?
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#5 (permalink) Old 05-21-2006, 12:58 PM
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No, but I have the Bently manual. If someone could tell me how to copy and link it in here, I'd do it.

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#6 (permalink) Old 05-21-2006, 03:31 PM
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I see my manual says that the ATF is a lifetime fluid. VW claims the same on some of its ATs, but they crap out at 100K.
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#7 (permalink) Old 05-22-2006, 07:39 AM
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http://www.bavauto.com/newsletter/20...newsletter.pdf

Page 7. Make sure to get the correct type of ATF, there are several.
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#8 (permalink) Old 05-22-2006, 04:56 PM
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get the fluid from the dealer....I've only had a couple tranny problems roll thru the shop and neither of them were fluid/service related.

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#9 (permalink) Old 05-26-2006, 11:06 PM
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Quote:
Originally Posted by 325isBaby
get the fluid from the dealer....I've only had a couple tranny problems roll thru the shop and neither of them were fluid/service related.
Glad to hear that. They must need rebuilding sometime, though. Any guesses on how many miles the auto tranny will last if driven reasonably?
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#10 (permalink) Old 05-26-2006, 11:06 PM
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Quote:
Originally Posted by Hootie
http://www.bavauto.com/newsletter/20...newsletter.pdf

Page 7. Make sure to get the correct type of ATF, there are several.
Thanks Hootie. Pretty much answers all the questions! I'll be doing a drain and refill here shortly. I'm going to guess the dealer won't do it as a part of the service package that came when we bought it.

Last edited by FL325i; 05-26-2006 at 11:15 PM.
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