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      11-19-2012, 02:35 PM   #3
vapore0n
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Drives: 2010 335i
Join Date: Jul 2011
Location: MA

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Here is a quote I found:
Quote:
Per the Bentley BMW 3 Series Service Manual, Page 333-1:

Rear differential capacity non-turbo: 1.0 ltr (1.05 qt)

Rear differential capacity turbo: 1.2 ltr (1.3 qt)


Per the Bentley BMW 3 Series Service Manual, Page 333-2:

Tightening Torque (all) Fill / Drain Plug: 44 ft-lb
Here are instructions:
http://www.bokchoys.com/differential/diff_fluid.htm

So you would be fine as long as you dont spill the bottle.
If anything, just buy an extra bottle. Save it for next change in 40k miles