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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N47 and N57 Turbodiesel Engine / Drivetrain / Exhaust Modifications > Rear Differential Fluid
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      06-13-2018, 03:48 PM   #1
n00bkiller944
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Rear Differential Fluid

Getting ready to do a rear differential fluid change on my 14 328d. Anyone know what oil is recommended for the rear end? Any oil you guys recommend?

Thanks!
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      06-25-2018, 08:17 PM   #2
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I put the Redline fluid... I can't remember if it was 75w-85 or 75w-90
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      06-26-2018, 09:16 AM   #3
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What is the interval for changing the diff oil?
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      06-26-2018, 08:59 PM   #4
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Thanks guys! Will update once completed!
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      12-18-2018, 03:09 PM   #5
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Bump for update?
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      12-18-2018, 03:59 PM   #6
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Used a mityvac pump to pump out the old fluid. Refilled with one bottle of this https://www.fcpeuro.com/products/gea...ly-99991754600

Last edited by n00bkiller944; 12-19-2018 at 11:48 AM..
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      12-19-2018, 07:41 AM   #7
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^ Thanks for the update. Mind sharing a DIY or you process?
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      12-19-2018, 10:18 AM   #8
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75w-140 is too thick per BMW specs. May be ok?
But they call for 75w-85 or thereabouts.
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      12-19-2018, 11:49 AM   #9
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Quote:
Originally Posted by Enabled View Post
75w-140 is too thick per BMW specs. May be ok?
But they call for 75w-85 or thereabouts.
Good catch. I posted the incorrect link in my past post. I will go edit it. I used Liqui moly 75w -90. https://www.fcpeuro.com/products/gea...ly-99991754600
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      04-13-2021, 12:17 PM   #10
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What Is the recommended interval for differential oil change?
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      04-13-2021, 12:25 PM   #11
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BMW says it's lifetime.

But I think 60k miles is a good time to get it done.
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      04-13-2021, 01:23 PM   #12
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60k is the interval Ive been following as well.

I used the Redline / new plug kit from FCP Euro.

Last edited by sspade; 04-20-2021 at 05:45 AM..
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      04-14-2021, 12:10 AM   #13
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FCP Euro has a good YouTube series for F30 maintenance. Changing the rear diff fluid is one of them, they recommend OEM fluid.

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