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Old 03-23-2023, 01:56 PM
cn90 cn90 is offline
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Join Date: Jun 2014
Location: Omaha, NE
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The input seal of any diff is always a challenge simply bc it requires expertise for proper installation.

Check rear diff fluid level.

Best is to drain it and fill it.
I use Redline fluid.
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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT
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