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differental fluid change

Discussion in '1st Gen. Tacomas (1995-2004)' started by Fish Taco, Feb 21, 2010.

  1. Feb 21, 2010 at 5:05 PM
    #1
    Fish Taco

    Fish Taco [OP] Member

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    I have a 99 4x4 and am wanting to change the differential fluid and (not sure of the name)...the transfer case, the 4x4?? from the few things i have read i think im gonna need about 4 qts of 75w 90 gear oil. Im pretty sure i can change it, i just wanna know that im gettin the right stuff, any suggestions would be great, THANKS!
     
  2. Feb 21, 2010 at 5:55 PM
    #2
    Fish Taco

    Fish Taco [OP] Member

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    Not sure i was totally clear. i wanna change the rear differential, and the 4x4 transfer case...i think thats waht its called.
     
  3. Feb 21, 2010 at 9:56 PM
    #3
    scocar

    scocar Scouting the perimeter for weakness

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    Back to square one after the 2001. So...
    It is in your owner's manual, assuming you have it. Look in the back for all fluid capacities and spec. Transfer takes GL-4 75-90. Based on other's recommendations on this site, I will be using Redline MT90. Search for MT90 to see more info...
     
  4. Feb 22, 2010 at 3:19 PM
    #4
    Jigzor

    Jigzor Well-Known Member

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    You do know that '@' and '&' mean two different things right?

    you'll
    &
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    I refuse to correct the punctuation mistakes.
     
  5. Feb 22, 2010 at 9:22 PM
    #5
    scocar

    scocar Scouting the perimeter for weakness

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    Back to square one after the 2001. So...
    Man, it just hurt trying to read any of that. Ouch. It looks like what a customer call center in India would say...
     
  6. Feb 23, 2010 at 12:28 PM
    #6
    Fish Taco

    Fish Taco [OP] Member

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    Yeah that was confusing the first time i read it, but after rereading i got it. I am getting 5 qt of mobil 75w 90 synthetic and 3 gaskets from the dealer to do both differentials and the transfer case. Whats wrong with gaskets, say from auto zone?
     
  7. Feb 23, 2010 at 2:09 PM
    #7
    scocar

    scocar Scouting the perimeter for weakness

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    Back to square one after the 2001. So...
    Um, nothing, necessarily, if they give you the right ones. You need the crush washers for both the drain and the fill plugs, so you need a pair of crush washers for any single thing you refill (each diff, the tranfer case, the transmission (in manual, anyway).

    The transfer and manual transmision use the same thick aluminum crush washers for fill land drain. The FSM specifies 27 ft-lb torque for all of these.

    The rear diff takes a pair of slightly different crush washers (slight deformable ridge on one side), and the torque is higher (I think about 39 ft lb IIRC). The rear diff ones can be tough to get off, and I suppose they could be even tougher in the future if you don't use the specified washers and torque. Start with the fill plug so you don't get stuck with an empty diff if it won't come off! You might want to hit them with a wire brush and some WD40 if they are crusty. And use a breaker bar. And don't punch yourself in the face. And don't punch the driveway. And don't punch the truck.

    I haven't done the front diff yet, but it uses one totally different plug (I think fill) that is 10mm hex and has a copper crush washer. I don't know that you can get this at Autozone. The drain is the same as the rear diff, I believe.

    If you can easily get to a dealership, I would just go get them all there, because they should have them all in stock. In fact, you might want to get a couple extra plugs, too, in case yours are jack up or get damaged when you remove them. You can always return them if you don't need them, but that way you won't be screwed under your truck on Sunday afternoon, which is what Murphy always tries to do...

    Note that the Haynes torque values are completely wrong, so don't use those. Use the FSM.

    Hope this helps.
     
  8. Feb 23, 2010 at 4:06 PM
    #8
    Fish Taco

    Fish Taco [OP] Member

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    Thanks for all the help! Im gonna make a trip to the dealer for gaskets, and put her on the lift friday and giver a some lovin!
     
  9. Apr 5, 2010 at 10:51 AM
    #9
    mattleegee

    mattleegee Well-Known Member

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    what about the guys that dont have a owners manual?

    5.5qt of motor oil for the v6

    then... 5qt for both diffs and transfer case? that is all i got :(

    that would be nice to have a forum with a nice spreadsheet
    something like this:

    1st gen Taco'

    Motor oil
    v6 5.5qt
    4banger ?qt

    Transfer case (mt90 recommended)
    ?qt

    Diff fluid (75w90 recommended)
    ?qt

    Transmission ( ?? recommended)
    ?qt

    Notice the question marks becasue i honestly dont know, im coming from a Skyline motor...
     
  10. Apr 5, 2010 at 12:18 PM
    #10
    steve o 77

    steve o 77 braaap

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    Rear end takes about 3 quarts, front a little under 2, transfer case was a little over 2, and manual trans is about 2.6, I think, someone correct me if im wrong...
    Just get 7 quarts of M1 synthetic 75w90 for the diffs and transfer case and 3 quarts of MT-90 for the trans.
    Do not put MT-90 in the transfer case.
    This is what I did anyways.
     
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