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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 > When is time for AUTOtranny Flush/Pan Maintenance



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      03-14-2013, 11:27 AM   #1
N54 TuNeR
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When is time for AUTOtranny Flush/Pan Maintenance

I have about 33,000 miles on my auto tranny.Tuned since 8000 miles FBO & Meth since 25,000miles.Now have Alpine Flash.
Since we are pushing our cars to the limit should the trans fluid be changed soon?Or a Tranny pan service kit?When should it be done with a fully modded 335?
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      03-14-2013, 12:01 PM   #2
wahooooman
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Quote:
Originally Posted by N54 TuNeR View Post
I have about 33,000 miles on my auto tranny.Tuned since 8000 miles FBO & Meth since 25,000miles.Now have Alpine Flash.
Since we are pushing our cars to the limit should the trans fluid be changed soon?Or a Tranny pan service kit?When should it be done with a fully modded 335?
this is a good question as i asked my dealership today. my dealer said they dont recommend changing the fluid because it is BMW life time fluid, but if people ask they will do it around 100k. Im at 80k tuned for 40k, and i have no issue yet (fingers crossed) but hopefully some one with more understanding can clear things up!
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      03-14-2013, 08:16 PM   #3
BillionPa
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ZF says the 6HP21 interval is 30K miles....
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      03-15-2013, 06:00 PM   #4
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I have 78,000 on my 2009 and asked my Service Rep and he said the few times they have changed out the Tran fluid on other cars that it still looked very clear, clean, and translucent. He recommended I not change it per the owners manual
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      03-15-2013, 06:21 PM   #5
phozenstone
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I changed mine at 50K and it looked ok. Prolly could have lasted longer but my next planned interval is 100K. Transfer case on the other hand was damn dirty...no way that would've lasted 100K
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      03-19-2013, 01:49 AM   #6
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Quote:
Originally Posted by BillionPa View Post
ZF says the 6HP21 interval is 30K miles....
Ermm ZF states 50k miles for heavy usage. I changed mine at 50k miles, I would recommend the same.
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      03-19-2013, 05:00 AM   #7
BillionPa
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Quote:
Originally Posted by JunkStory View Post
Ermm ZF states 50k miles for heavy usage. I changed mine at 50k miles, I would recommend the same.
I though they listed 50K in kilometers, which would translate to 31K miles, I could be mistaken
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      03-19-2013, 08:52 AM   #8
N54 TuNeR
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Looks like I'm gonna change the fluid this spring when it warms up here.thx for all your input.
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      03-20-2013, 06:34 PM   #9
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Quote:
Originally Posted by JunkStory View Post
Ermm ZF states 50k miles for heavy usage. I changed mine at 50k miles, I would recommend the same.
+1.
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      04-01-2013, 12:06 PM   #10
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I just changed the fluid (LG6) and mechtronic sleeve on my 6HP19 yesterday at 100K miles. First time it has been done in the 5 years I have had the car. Let me just say, I should have changed it sooner. It was pitch black. I was getting a slight slip from 1st to 2nd prior to the change. I would say between 50k and 75k miles would be good intervals for the change. I'm sure I will do it again this year since I didn't get all of the fluid out because of the TC, but it definitely should not wait until 100k.
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