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6 Series
The BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 09-08-2012, 04:23 PM
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Nitrogen Nitrogen is offline
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Location: Central California
 
Join Date: Apr 2012
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Mein Auto: BMW 650i Convertible
650i transmission fluid do or don't

I was wondering if anyone has experience changing tranny fluid?
Not how to do it but should I do it or is there a chance my tranny will fail?

Do these cars have lifetime fluid or does it need to be changed?

Any horror stories or success stories?
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  #2  
Old 09-08-2012, 06:08 PM
HerbP HerbP is offline
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Mein Auto: 2005 645Ci & 2007 750Li
There is a DIY in the DIY section. Most people get very good results with smoother shifting patterns by changing the fluid. The filter & pan are 1 piece. Parts cost will be around 225 to 250 dollars. BMW says the fluid is lifetime, but it is usually shot at 50k.

Good Luck!
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  #3  
Old 09-08-2012, 06:20 PM
johndade johndade is online now
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Mein Auto: 2002 bmw 745li
I just did this myself. And i can tell you I'm getting much better shifting just like butter. I bought the kjt from ctsc and also the seeling sleeve along with seal adapter and 21 new bolts in case the ones on there were gonna get stripped. I had dealer charge two and a half hours labor for this which i think was fair. To be in safe side i would also purchase one extra bottle of fluid. I plan to do jyst fluid only next year to get a complete fluid change. The horror story usually happen when people do flushing not a drain and fill dealers dont do flushing only drain and fill. Hope that helps you deciding good luck.

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Old 09-09-2012, 03:12 AM
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645/333 645/333 is offline
Michael
Location: uk
 
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Mein Auto: Black Sapphire BMW Z4 3L
The reason people don't drain all 9ltrs is because the torque converter which holds 4 ltrs is too difficult to drain unless you purge the whole system. Which is why they do multiple changes 2-3..... which is expensive as well. Most people change the pan due to cracking which is very very common across a range of BMW's models.
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Old 09-09-2012, 02:46 PM
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Nitrogen Nitrogen is offline
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Mein Auto: BMW 650i Convertible
Thanks for all the replies makes it easier to decide! I think I'll go for it and see what happens!
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Old 09-09-2012, 09:35 PM
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Yorgi Yorgi is offline
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Mein Auto: '04 M3 / '06 650i Cab
My indie has a machine to get every drop of transmission fluid out during a change. They open up the line leading to the transmission fluid cooling rad and hook up a machine in series. The old fluid is drawn into the machine while at the same time fresh fluid is pumped into the transmission. It's a great way to remove all the old fluid in a single pass.
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