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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 02-15-2009, 11:44 AM   #1
mujjuman
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looking for DIY Differential fluid change....

I am looking for DIY Differential fluid change with pictures... I tried searching but so far I have found nothing. Maybe my searching skills arent the best. Please help.

I have the basics down...
Jack rear end up
find "fill" plug, unscrew it
unscrew "drain" plug, drain fluid into container
replace drain plug with a new washer
use a pump to fill 75W90 fluid
replace the fill plug.
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Old 02-15-2009, 11:55 AM   #2
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Someone didn't look hard enough.

http://bokchoys.com/differential/diff_fluid.htm
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Old 02-15-2009, 04:03 PM   #3
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Here is one:

http://www.bmw325i.net/maint_rear_diff_fluid.shtml (hopefully the pictures will load for you. For some reason I am having some trouble with this website)

You are correct on the basics. Make sure you put the rear of the car on jackstands. This should give you enough room to get the hex into the fill plug.

I drove mine onto front ramps and then jacked up the rear and set the jackstands to make it level.
All-in-all this is quite easy to do.
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Old 02-15-2009, 07:02 PM   #4
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Originally Posted by gregetski View Post
Here is one:

http://www.bmw325i.net/maint_rear_diff_fluid.shtml (hopefully the pictures will load for you. For some reason I am having some trouble with this website)

You are correct on the basics. Make sure you put the rear of the car on jackstands. This should give you enough room to get the hex into the fill plug.

I drove mine onto front ramps and then jacked up the rear and set the jackstands to make it level.
All-in-all this is quite easy to do.
I cant open their pictures either.
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Old 02-16-2009, 08:33 PM   #5
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Thanks for the links.
Yeah i found that site, but it would have been ALOT more helpful if the pics worked.
thanks for the link ken.
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Old 02-16-2009, 08:34 PM   #6
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also, a bit of a n00b question but where can i get ramps? and how much are they?
and what jack should i use, the one that came with the car? i would imagine not...
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Old 02-16-2009, 08:36 PM   #7
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Go buy a good jack from Sears or Harbor Freight. Ramps are available at any auto parts store.
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Old 02-16-2009, 09:01 PM   #8
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cool, thanks
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Old 07-28-2009, 05:34 PM   #9
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Originally Posted by mujjuman View Post
also, a bit of a n00b question but where can i get ramps? and how much are they?
and what jack should i use, the one that came with the car? i would imagine not...
I got a 3ton jack + 2 jack stands combo for $125 from Lowes and have not had any problems with them
http://www.lowes.com/lowes/lkn?actio...3JS&lpage=none

I bought the heavy duty plastic ($46, 12K lbs capacity) ramps from an Advanced Auto store and they work great too!
http://shop.advanceautoparts.com/web..._T|GRP2042____

No problems with either set of products and I use them all the time! Hope this helps
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Old 07-28-2009, 05:36 PM   #10
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yes it does. sweet. thanks!!
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Old 10-15-2010, 10:56 PM   #11
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Thanks for the links to the DIY
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Old 07-21-2011, 02:18 PM   #12
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question; that DIY posted says that the car needs 2 bottles of gear oil, but some people have posted that 1 bottle is enough- so, which is it? i have the liqui moly gear oil, 2 bottles which contain 1 liter each.
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Old 07-21-2011, 02:22 PM   #13
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I believe I used just over 1 bottle...
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Old 07-21-2011, 02:33 PM   #14
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Quote:
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question; that DIY posted says that the car needs 2 bottles of gear oil, but some people have posted that 1 bottle is enough- so, which is it? i have the liqui moly gear oil, 2 bottles which contain 1 liter each.
its 1.1 L. So you need a little more than one bottle.
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Old 07-21-2011, 02:34 PM   #15
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question; that DIY posted says that the car needs 2 bottles of gear oil, but some people have posted that 1 bottle is enough- so, which is it? i have the liqui moly gear oil, 2 bottles which contain 1 liter each.
Bentley lists the diff for auto trans at .9 L (.95 qt.)

For Manual diff 1 L or 1.06 QT

M3: 1.3 L (1.37 qt)

Oil spec: BMW SAF-XO synthetic oil

Good luck reading the diff fluid threads...get OE if you can figure out how like me!
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Old 07-21-2011, 02:44 PM   #16
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^ thanks, dmax! yup mine is the auto. i wasn't able to find the oem fluid, so i bought 2 liters of the liqui moly fully synthetic 75w-90 gear oil. i figured it's german, so it's gotta be as good as oem.
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