Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.

DIFF Fluid Change

Post Reply
BlackSapphireZ
Member
Member
Posts: 460
Joined: Fri Sep 28, 2007 5:59 am
Location: Woodstock, MD

DIFF Fluid Change

Post by BlackSapphireZ » Fri Sep 28, 2007 5:22 pm

THIS DIY IS FOR 2003 Z4 2.5i MANUAL
do this when the car is fairly warm but not burning hot as you will be working near the exhaust. and again, dont' sue me if you make a mistake..and if you are not mechanically inclined, bring it to me i charge a lot ;)

tools required
1)8mm socket wrench
2)jack
3) FOUR jack stands
4)1 quart of 75w-90 oil of your choice...mine being Mobile 1
5)Hand Pump
6)14mm hex socket. there's a DIY for this instead of buying. Honestly though, i forget if its 12 or 14 lol

My way of jacking up all four tires safely.
1)jack driver side only, put the jackstand under the lower control arm.
2)do the same on the passengerside
3)go to the rear, look at the center where the two bars come together and bolts on. Jack from there to a position and place jackstands under the factory jack location on the sides
Image

1)get the car in the air. all 4 tires off, and in somewhat of a leveled position.
Image

2)notice where you jacked up the car in the rear? well there is the silver covering, you need to remove the rear half of it by using 8mm socket wrench

3)when done, look for the FILL plug, it's kind of slanted...unscrew that with the 14mm hex socket.
Image

4)then unscrew the DRAIN plug...oh don't forget to put something underneath to catch the oil and tighten drain plug

5)using the hand pump, pump diff oil in until it oozes out of the fill hole
Image

6)again, take the car down in a safe manner, use a common sense and you are done!
Image

User avatar
plowy
Member
Member
Posts: 724
Joined: Fri Sep 28, 2007 9:00 pm

Re: DIFF Fluid Change

Post by plowy » Sun Sep 30, 2007 11:00 pm

Great, so what is the BMW reconmmendation on this change of oil ??

BlackSapphireZ
Member
Member
Posts: 460
Joined: Fri Sep 28, 2007 5:59 am
Location: Woodstock, MD

Re: DIFF Fluid Change

Post by BlackSapphireZ » Sun Sep 30, 2007 11:42 pm

they tell u it's good for lifetime...i think not
Image

User avatar
plowy
Member
Member
Posts: 724
Joined: Fri Sep 28, 2007 9:00 pm

Re: DIFF Fluid Change

Post by plowy » Sun Sep 30, 2007 11:59 pm

BlackSapphireZ wrote:they tell u it's good for lifetime...i think not
Cool, send your Cv to BMW... :lol: :lol:

I tend to agree and for piece of mind i want to do this too.. :wink:

User avatar
CUREthe
Member
Member
Posts: 140
Joined: Thu Sep 12, 2013 9:45 am

Re: DIFF Fluid Change

Post by CUREthe » Sat Sep 21, 2013 11:26 pm

plowy wrote:Great, so what is the BMW reconmmendation on this change of oil ??
x2.
Smart Pulse CDI 02' Bay Grey
BMW E30 316i 90' Delphin Metallic
BMW E85 2.2i Roadster 04' SterlingGrau Metallic

mad4slalom
Senior Member
Senior Member
Posts: 1833
Joined: Tue May 01, 2012 12:26 pm

Re: DIFF Fluid Change

Post by mad4slalom » Sun Sep 22, 2013 12:00 am

bmw reccomend a special friction modified diff fluid at 95 quid to keep the lsd quiet, didnt know mobil 1 did a 75 /90, looks like you have a slight oil leak from the diff flange seal too , quite common I think , mine had slight misting pointed out at ins2. :driving:

User avatar
Ewazix
Lifer
Lifer
Posts: 4721
Joined: Sun May 02, 2010 5:30 pm
Location: Somerset

Re: DIFF Fluid Change

Post by Ewazix » Sun Sep 22, 2013 8:32 am

What condition was the old fluid? I assumed it would be a sludge after 10 years but it looks remarkably clean :?
2003 2.5 SE, low miles, Sterling Grey, 108's & Eagles, no stubby here! Unmolested.
2018 Cooper S Countryman
Fiesta Ecoboost

User avatar
Wondermike
Moderator
Moderator
Posts: 10466
Joined: Fri Jun 15, 2007 10:16 pm

Re: DIFF Fluid Change

Post by Wondermike » Sun Sep 22, 2013 9:36 am

The thread is 6 years old so the fluid was only 4 years old :)

User avatar
Ewazix
Lifer
Lifer
Posts: 4721
Joined: Sun May 02, 2010 5:30 pm
Location: Somerset

Re: DIFF Fluid Change

Post by Ewazix » Sun Sep 22, 2013 9:44 am

Wondermike wrote:The thread is 6 years old so the fluid was only 4 years old :)
............ :headbang:

:lol:
2003 2.5 SE, low miles, Sterling Grey, 108's & Eagles, no stubby here! Unmolested.
2018 Cooper S Countryman
Fiesta Ecoboost

Post Reply