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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Tue, Feb-09-2010, 08:23:47 PM   #1
ECSTuning
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Default ECS Tuning :: Geunine BMW Motorsport Differential Fluids ~ AKA FM Booster



The ///M limited slip differential is sometimes known for a grinding noise during low speed cornering.

It is caused when the rear wheel speed differential varies during tight cornering, a slip stick effect is created on the lining and steel discs incorporated in the differential locking clutch, causing the grinding noise.

This is the new fluid described by BMW to cure this problem (TSB# 33 01 02) in the following models.

**Includes friction modifiers to reduce noise during low speed cornering

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Old Wed, Feb-10-2010, 01:16:25 AM   #2
IFX
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People are using redline for the diff as well, no?

What are the differences? I will need to do this soon.. I plan on buying oil, diff fluid, and tranny fluid.
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Old Wed, Feb-10-2010, 01:19:52 AM   #3
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Buy this OEM stuff. I had grinding and vibrations from my diff. Changed out the previous fluid and put in the OEM stuff, diff is now smooth as glass.
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Old Wed, Feb-10-2010, 01:22:09 AM   #4
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I hear of some people using redline as well...
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Old Wed, Feb-10-2010, 01:27:50 AM   #5
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Just noticed that when I make a very tight turn (particularly left turns), I get just such a noise, will have to pick some of this up. Anybody have a link to a good DIY?
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Old Wed, Feb-10-2010, 01:31:24 AM   #6
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Only because your a fellow AW/Imola head ^^

haha
http://www.m3forum.net/m3forum/showthread.php?t=252529
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Old Wed, Feb-10-2010, 01:40:56 AM   #7
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I believe that 3 of these are needed to perform a diff oil change?
How many are you selling exactly?
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Old Wed, Feb-10-2010, 02:10:08 AM   #8
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Quote:
Originally Posted by IFX View Post
Only because your a fellow AW/Imola head ^^

haha
http://www.m3forum.net/m3forum/showthread.php?t=252529
You're the man, thanks for representing AW/IR! Going to get this done shortly
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Old Wed, Feb-10-2010, 02:11:46 AM   #9
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You going to DIY?^
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Old Wed, Feb-10-2010, 02:49:08 AM   #10
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Quote:
Originally Posted by IFX View Post
You going to DIY?^
Definitely, I just did the CDV-delete this past weekend (a must-do for 6MT) and changing the diff fluid looks to be even easier.
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Discussing ECS Tuning :: Geunine BMW Motorsport Differential Fluids ~ AKA FM Booster in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)