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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 > differential fluid change

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      12-11-2008, 07:45 PM   #1
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differential fluid change

I can see a drain plug that will be on the bottom of the diff but as for the fill plug all I can see is one that has something press fit into it. I dont think i can remove the fill plug because of that. How do you guys change the diff fluid since there is only the drain plug?
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      04-08-2012, 11:59 AM   #2
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I hate to this really old thread. But i am in the same boat now. I want to change my diff fluid but have never had a car with only a drain plug. How am I supposed to drain and fill with new fluid. I know BMW says this is lifetime fluid but I don't buy into that crap.
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      04-08-2012, 03:06 PM   #3
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It only has a fill plug. Take a look at the DIY in that section.
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      04-08-2012, 06:33 PM   #4
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you need a transfer pump to pump out the old fluid and to pump in the new fluid.
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      04-08-2012, 08:41 PM   #5
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Originally Posted by bimmertt View Post
you need a transfer pump to pump out the old fluid and to pump in the new fluid.
You can also siphon it out and fill it by using a funnel/tubing (like an IV). Both are simple, but take some time.
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      04-09-2012, 02:17 PM   #6
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Just get tubing the same size as the threaded portion, then use a kragen fluid pump
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