BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing
 
INDustry distribution
Post Reply
 
Thread Tools Search this Thread
      05-05-2013, 02:26 PM   #1
rantarM3
First Lieutenant
3
Rep
318
Posts

 
Drives: E90 M3
Join Date: Aug 2011
Location: Florida

iTrader: (1)

Differential Fluid Change and Vehicle Position

Some of you may have noticed that the E90 M3 has a rake such that the side jack pads behind the front wheel sit about 1" lower than the rear ones. So if you put the car on a lift or on jack stands, the bottom of the car will be level with the floor whereas if you have it on ramps or on the ground, the bottom of the car will not be level.

So the question is whether this matters when changing the diff fluid. I was planning on doing it while the car is on a set of ramps (all four corners raised the same amount) but that means the car would be slightly tilted towards the front. I've changed my engine oil this way and had no problems.

Hope someone has some insight as I could not find anything on TIS about this.
Appreciate 0
      05-05-2013, 03:23 PM   #2
gatorfast
Colonel
gatorfast's Avatar
33
Rep
2,676
Posts

 
Drives: MR E90 M3
Join Date: Jan 2008
Location: SoFla

iTrader: (3)

When I did mine with a friend recently we just jacked up the passenger side rear, removed fill/drain bolts, lowered car bak down to allow it to drain, then filled it back up. However, I also had the exhaust off at the time which gave me a little more room to work.

I don't think you will have any problems doing it as you describe. But if you want to take a shortcut you can get away with raising the rear only.
Appreciate 0
      05-06-2013, 07:41 PM   #3
rantarM3
First Lieutenant
3
Rep
318
Posts

 
Drives: E90 M3
Join Date: Aug 2011
Location: Florida

iTrader: (1)

I was primarily concerned with whether the car needs to be "level" or whether it can be done with the wheels level. These two things are not the same and if the car is raking towards the front, the diff fluid may accumulate in front of the drain plug. Maybe the angle is so little that it is of no consequence, which is what I think, but just wanted confirmation.
Appreciate 0
      05-07-2013, 07:55 AM   #4
Sean05
Putcha ang ganda...
Sean05's Avatar
Philippines
89
Rep
5,331
Posts

 
Drives: 08 MR E92 M3
Join Date: Feb 2010
Location: Los Angeles, Brea CA.

iTrader: (9)

Send a message via Yahoo to Sean05
just change them... if its level .. let it drip and put the new fluid in.. thats how the dealer do it. why make it complicated.

dealer puts it in lift remove fill bolt, remove drain bolt let it drain and fill it in with new fluid... simple
__________________
Appreciate 0
      05-07-2013, 11:42 AM   #5
W///
Major General
W///'s Avatar
86
Rep
5,417
Posts

 
Drives: 2008 E92 M3/1999 E36 M3 Coupe
Join Date: Sep 2011
Location: SC

iTrader: (12)

You'll be fine. 1" isn't going to make a huge difference.
__________________
2008 E92 M3: Sparkling Graphite | Bamboo Beige | 6MT | CF Roof | HRE | Catless Eisenmann Race | BPM Sport | Swift | Arkym | Mode Carbon | M.Perf
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 04:42 PM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST