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      02-20-2011, 01:44 PM   #1
joeo
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135i Manual Transmission Fluid Change

Just did the transmission fluid change on a 2009 135i with the 6 speed manual transmission, and took some pictures/video along the way. It's actually a very easy process to do. I used Redline D6-ATF fluid.

After driving it, I noticed that the shifter slides into gear more easily, and the notchy feel has been reduced particularly when it's cold.
I took the advice of 'wolfe' on this forum and took a sample of the old fluid. It certainly looked dirty after about 20,000 miles. Both the old and new fluids seem very thin compared to typical gear oil (like 75W-90) just from how fast they drain.

Hope someone finds this useful - comments welcome!

2009 135 Manual Transmission Fluid Drain and Fill

-Joe
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      02-20-2011, 02:47 PM   #2
Dackelone
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Quote:
Originally Posted by joeo View Post
Nice photos! My only gripe - is the tool you used to remove the fill and drain plugs... is the wrong type. I wouldn't use a "ball head" allen socket - you run the risk of breaking the "ball head" off your tool. Then you are screwed on getting that drain/fill plug off. I would use just a regular allen socket.

Maybe the factory plugs have enough depth as to allow the shank of your tool to grab the plugs instead of only the "ball head" taking the grunt/load.

Btw... why did n't you post your photos in the DIY writeup for changing your tranny fluid?

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      02-20-2011, 03:34 PM   #3
Dackelone
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Joeo - why not post your photos here...

http://www.1addicts.com/forums/showthread.php?t=409293

It would make a great contribution to the community.


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      02-20-2011, 04:11 PM   #4
joeo
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I didn't post in the other thread since that was for the 128i - but I will do that. The reason for using the ball head was because it was the tool I already had.

You are absolutely correct - a better tool would be a regular allen - that said, the drain plugs were not particularly tight.

-Joe
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      02-01-2015, 09:34 PM   #5
zeeth2800
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Thanks so much for the advice and the write up. I chose Redline D4 and I am very happy with the results. Instant flawless shifting and my 2nd gear "notch" is completely gone!
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