How To - Change Diff Oil

Discussion in 'Engine maintenance, upgrades and modifications' started by fasteddie, Jul 16, 2009.

  1. 16 Jul 2009 at 3:32 PM #1
    fasteddie

    fasteddie Rocking a new hat

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    Hi Guys

    Here's a quick guide on changing your diff oil:

    Why I did it:
    I changed the diff seals so decided that whilst under the car and in that area, I would change the oil as I might have got some dirt in the diff.
    Also, the diff was making a noise when turning slow corners so filled it up using the BMW friction modifier oil

    Parts Needed:
    3x 83.22.2.282.583 - BMW Diff Oil

    [​IMG]

    Special Tools Needed:
    14mm Allen Key

    Guide:
    Step 1 – Jack up car and make sure you have an axle stand underneath it and secure as you will be working underneath it.

    Step 2 – Place a container underneath the drain plug.

    Step 3 – Remove the filler plug first (Number 2) as there’s nothing worse than draining the oil, only to find out that you can’t fill it back up again!

    Step 4 – Remove the drain plug (Number 1) and catch the old oil in the container.

    Step 5 – Put the drain plug back in.

    Step 6 – Make sure that the car is level and fill the diff with approx 1.3 litres but when it starts pouring out of the filler hole, that’s when it’s full.

    Step 7 – Put the filler plug back in and tighten.

    Step 8 – Drop car back down and take for a spin. Try to go to an open car park and do 10-12 figures of eights to allow the fluid to go through all the diff.

    [​IMG]

    Hope that helps!
     
    Last edited: Jul 17, 2009
  2. 11 Aug 2009 at 1:09 PM #2
    Danny

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    Its roughly about a 30 min job no need to visit the Stealers.
     
  3. 11 Aug 2009 at 8:53 PM #3
    M3-POPE

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    How much was the diff oil matey?
     
  4. 11 Aug 2009 at 8:55 PM #4
    Castanea

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    Good post Eddie,

    Sort of thing anyone could do but maybe few actually do?
     
  5. 12 Aug 2009 at 12:15 AM #5
    Danny

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    £75 inc vat for 3 pts, you only use 2 and a bit.
     
  6. 23 Sep 2009 at 7:53 PM #6
    Slackster

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    Hi Guys,

    I've had my M3 for 2 weeks now and just noticed over the past 3 or 4 days that i'm getting a wierd "tinny" metal on metal grinding noise at low speeds when pottering around, i was convinced it was something to do with the brakes on the drivers rear wheel but after reading this i'm not so sure.

    is the noise you hear for the diff oil problem a constant one or more like some piece of metal is being dragged banging around intermittently at the back?

    i can't feel a thing but can hear it out of the window! does this sound familiar? i just bought it after having Inspection II done by the indy dealer.


    Cheers

    Russ
     
  7. 6 Oct 2009 at 10:20 AM #7
    mpower

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    i had that same problem and it was my hand brake shoes had crumbled away they were just rubbing inside the drum £44 for new handbrake shoes!
    the noise was sort of sounded like u had a small bit of alliminium dragging behind u!
     
  8. 14 Oct 2009 at 1:55 PM #8
    tommac

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    great post/right up- did this on my m last week due to the grinding noise- took 30mins tops, very worth while as cured the noise (£75 is steep but less than a diff!!!)
     
  9. 2 Feb 2010 at 3:16 PM #9
    css

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    stupid question this may be but i am collecting the diff additive on thurs (part number 83.22.2.282.583 = 3 bottles). Now i was not sure whether it is simply an additive or it replaces the existing oil in the diff already. I asked 2 different garages about this and both said it is an additive so just add it to the oil already in the differential.

    I am confused now as you have drained the existing oil and replaced it with this stuff.

    Whish is right??
     
  10. 2 Feb 2010 at 3:40 PM #10
    css

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    I have found another useful write up, it is american tho LOL



    Here is the BMW Bulletin:
    SI B33 01 02
    Rear Axle December 2003
    Service Engineering

    This Service Information bulletins supersedes S.I. B33 01 02 dated June 2002.

    designates changes to this revision

    SUBJECT
    Grinding Noise from Differential During Slow Cornering

    MODEL
    E46 M3 from start of production through December 2003

    SITUATION
    A grinding noise may be heard coming from the differential during slow cornering.

    This noise is best heard during tight cornering situations for example parallel parking, driving in a tight circle, etc.

    CAUSE
    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 a grinding noise.

    This noise typically goes away as the locking clutch discs in the differential break in.

    Break in time varies depending on driving habits, for example more tight cornering (working the locking clutch) = less time for breaking in the locking clutch discs.

    CORRECTION
    If a customer complaint is verified as described above on E46 M3 vehicles, the differential oil should be replaced with specially formulated differential oil, BMW part number 83 22 2 282 583.

    PROCEDURE

    1. Drain differential oil. See E46 M3 repair manual, group 33, section 00 11 259.

    2. Refill differential with special differential oil as shown in the illustration below.

    Differential fill capacity = 1.2 liters (1.3 quarts).

    R331042



    * Remove seal (1) between the bottle cap and neck.

    * Pull the filler tube (2) out of the bottle.

    * Remove cap (3) from filler tube (2).

    * Insert the filler tube into the fill hole in the differential and with the bottle positioned under the output shaft, squeeze the bottle to transfer the oil into the differential.

    3. Road test the vehicle.

    With the vehicle at operating temperature, drive in tight circles (20 circles in each direction) allowing the special oil to coat the locking clutch discs.

    The grinding noise will be eliminated when the locking clutch discs are sufficiently coated.

    Note: Vehicles that have had the differential oil converted to this special oil should continue to have this oil utilized whenever a service requiring differential oil replacement is indicated.

    PARTS INFORMATION
    Part Number
    Description
    Qty.
    83 22 2 282 583
    Special differential oil kit
    1
    Contains 3 bottles - .5 liters (.53 quarts) each

    bottle (order quantity 1 rounds to 3 bottles)

    WARRANTY INFORMATION
    Covered under the terms of the BMW New Vehicle Limited Warranty.

    Defect Code
    33 10 92 39 00

    Replace differential oil with special oil

    Labor Operation:
    00 53 267

    Labor Allowance:
    3 FRU
     
  11. 2 Feb 2010 at 9:22 PM #11
    lawsy

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    The new oil you have purchased replaces your old oil.
     
    Last edited: Feb 2, 2010
  12. 2 Feb 2010 at 9:32 PM #12
    css

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    cheers thats what i needed to know :thumbsup::confused:
     
  13. 3 Feb 2010 at 1:14 PM #13
    fasteddie

    fasteddie Rocking a new hat

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    Yup, it's basically normal diff oil and BMW put in an additive to stop the noise.

    Just drain your old oil out and replace with the new one.

    Simple as :thumbsup:
     
  14. 5 Feb 2010 at 8:36 AM #14
    Ian964

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    Does anyone know when BMW changed this oil to include an additive? I am not sure when mine was last done.

    Looking at this guide I think I will have a go at doing this myself.

    Is the diff oil changed during inspection 2? I am due for that service later in the year.

    Great write up - Rep added :thumbsup:

    Ian
     
  15. 5 Feb 2010 at 5:24 PM #15
    Dr.TuB

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    just went to the dealership and they said they do not carry anything other than the normal Castrol SAF-XJ. they do not have the ones with +FM booster!!!

    what should i do?
     
  16. 5 Feb 2010 at 7:36 PM #16
    css

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    find the oil with FM booster, i have rang many dealers round midlands and they all had it in stock. Ask your detail to get it in for you. It is readily available by dealers. I think if you get the normal stuff in few yrs you will have to change it to the FM stuff
     
  17. 5 Feb 2010 at 7:38 PM #17
    css

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    is it a 6mm or 7mm hex to unlock the diff bolts.? :thumbsup:
     
  18. 10 Feb 2010 at 4:29 PM #18
    CT1

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    12mm
    CT:thumbsup:
     
  19. 10 Feb 2010 at 4:33 PM #19
    css

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    cheers, found out on the weekend when i went to change the oil and found i didn't have an allen key large enough ...... but i have the correct tools now and will give it a go suunday
     
  20. 2 May 2010 at 12:30 PM #20
    sthorny

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    ive just done this and found that its a 12mm allen key and not a 14mm as stated i got the oil from my local stealer it cost 93 quid for the three bottles and its worked a treat :thumbsup: :thumbsup: :thumbsup:
     

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