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Diff Fluid Change - 3.4 V6 4x4 w/locker

Discussion in '1st Gen. Tacomas' started by Madjik_Man, Jun 6, 2013.

  1. Jun 6, 2013 at 5:32 PM
    #1
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    Reading the fluid specs (see attached) from the FSM and am wondering if I truly do need two different weight gear oils for the front and rear diffs?

    Since the text gets all messed up wrapping inside the diff box, I am having a hard time reading it. The way I'm reading it is:

    Front diff: GL-5 75W-90 1.2 quarts
    Rear diff w/locker: GL-5 80W-90 3.1 quarts

    I have no idea what the "2.8 quarts" is referring to nor do I know what the SWB and LWB stand for.

    Can someone let me know what gear oil to use for the diffs and how much? Thanks in advance.
     

    Attached Files:

  2. Jun 6, 2013 at 6:08 PM
    #2
    Alderleet

    Alderleet Ace of Spades

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    Use 75w-90 for all. Diffs and xfer case.

    Amsoil Severe gear is good shit!
     
  3. Jun 6, 2013 at 6:15 PM
    #3
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    See this is confusing.

    I was also given different info from one of the best mechanics in town. They say use 80W-90 for diffs front and rear.

    And holy crap... $15 a quart for Amsoil Severe Gear? :eek:
     
  4. Jun 6, 2013 at 6:21 PM
    #4
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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  5. Jun 6, 2013 at 6:34 PM
    #5
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    I assume those 2003 specs are the same for my 1998?

    Also... can I put 80W-90 in there even though 99.8% of the time it will be above 0 degrees? And just have it in the diffs for those rare times it does get that cold?

    Will it have any negative effect?
     
  6. Jun 6, 2013 at 6:52 PM
    #6
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    Thank you.

    Man this shat is confusing.. not to mention I'm a total tard.
     
  7. Jun 6, 2013 at 7:06 PM
    #7
    TrdSurgie

    TrdSurgie revised

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    Rear leaf spring tsb 5000 miles, w ac fan 26k miles, windshield creaking 28k miles- not warranty. Bad upper idler pulleys 32k miles- not warranty, Toyota Quality!
    To make it more confusingfor you.

    Use 90-130:D
     
  8. Jun 6, 2013 at 7:19 PM
    #8
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    And where can I even find Amsoil if I want to look at that?
     
    Last edited: Jun 6, 2013
  9. Jun 6, 2013 at 7:54 PM
    #9
    TIPICOTACO

    TIPICOTACO Well-Known Member

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    Some lift, some armor, some scratches..
    I use Lucas 75w-90 and have had no problems at all. This winter it got down to 3* and the truck never skipped a beat, I'm getting ready to drain/fill again soon and will use the same stuff
     
  10. Jun 6, 2013 at 8:18 PM
    #10
    tomtom

    tomtom Well-Known Member

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    You don't want too high a viscosity that the cold will turn it to sludge and won't protect the gears until you get them warmed up enough to not be sludge.

    SWB = Short Wheel Base, rear diff capacity is 2.8 quarts
    LWB = Long Wheel Base, rear diff capacity is 3.1 quarts

    Front diff capacity is 1.22 quarts regardless.

    You want to fill it up to about 5mm from the top of the fill hole.
     
  11. Jun 6, 2013 at 8:22 PM
    #11
    tomtom

    tomtom Well-Known Member

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    Straight outta teh 2003 FSM for ya:

    [​IMG]

    [​IMG]

    Shouldn't be much different than your year.
     
  12. Jun 6, 2013 at 8:30 PM
    #12
    nagorb

    nagorb Well-Known Member

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    Check Their Website, They Don't Stock It In Stores, The Place I Go Only Has Amsoil.
     
  13. Jun 6, 2013 at 8:36 PM
    #13
    Buckoma

    Buckoma Well-Known Member

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    I have used 75W-90 valvoline Syn Power full synthetic for about 10 years in both diffs (w/ rear locker) X-case and tranny (manual). I buy it bulk off amazon for pretty cheap. I've never had an issue with any of these components. Fluid nazis always chirp about lucas or amsoil... if I was a competitive racer I might pay a huge premium for that extra 1% of performance :rolleyes:
     
  14. Jun 6, 2013 at 9:11 PM
    #14
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    In your opinion do you think the cold temps of Colorado will have any effect on 75w90?
     
  15. Jun 6, 2013 at 9:45 PM
    #15
    tomtom

    tomtom Well-Known Member

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    75W90 will work fine.
     
  16. Jun 7, 2013 at 5:52 AM
    #16
    Lumpskie

    Lumpskie Independent Thinker

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    Like Tomtom said, 75w90 will work fine.

    In Colorado winters the 75 weight will actually be better than the 80 or 90 weight because it won't be quite as thick when it's cold.

    You can think about the numbers like this:

    A 75w90 oil has an actual weight of 75 but it protects as much as a standard 90 weight oil.
     
  17. Jun 7, 2013 at 5:55 AM
    #17
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    Thanks guys
     
  18. Jun 7, 2013 at 6:15 AM
    #18
    Lumpskie

    Lumpskie Independent Thinker

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    No Problem! Hey, did your rig come with a locker from the factory?
     
  19. Jun 7, 2013 at 6:45 AM
    #19
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    Yeah. It has the TRD package.
     
  20. Jun 7, 2013 at 7:11 AM
    #20
    buzzard1992

    buzzard1992 Yep

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    So I could run Mobil 1 75-90 in both diffs and tranny?

    Edit: not tranny. Transfer case
     
    Last edited: Jun 7, 2013
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