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Dex III or T-IV transmission fluid for a 2000 2.7L

Discussion in '1st Gen. Tacomas (1995-2004)' started by Caligula, Jun 17, 2015.

  1. Jun 17, 2015 at 4:10 PM
    #1
    Caligula

    Caligula [OP] It's the COVFEFE

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    Am I correct to assume that the required spec for this is the Dexron III fluid, not T-IV? If i already have a case of T-IV, can i use this, or is it better to get synthetic Dexron III?

    I am planning to do a full flush per:
    https://www.tacomaworld.com/threads/diy-full-flush-for-automatic-transmission.68462/

    I spend most my time working on BMW's, so i have handy a case of Febi Bilstien 14738, which is a lifetime LT71141/ESSO spec fluid which is also Dex III compatible. I also have about 6 bottles of Redline D4 i usually keep for manual trannys. Am I also correct that these would not comply with the Toyota T-IV spec for the A340 tranny?

    These fluids are each round $12/quart, so i would prefer not to go through 10 quarts of them if its not going to perform better then T-IV at $5/quart.
     
    Last edited: Jul 1, 2015
  2. Jun 17, 2015 at 5:10 PM
    #2
    Caligula

    Caligula [OP] It's the COVFEFE

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    Last edited: Jun 17, 2015
  3. Jun 30, 2015 at 2:24 AM
    #3
    Caligula

    Caligula [OP] It's the COVFEFE

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    Hello?

    I just noticed that the tranny dipstick says Dexron II on it.....

    So no to using T-IV fluid? Is it compatible?
     
    Last edited: Jul 1, 2015
  4. Jul 1, 2015 at 2:39 PM
    #4
    Caligula

    Caligula [OP] It's the COVFEFE

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    Still looking for advise and experiences...

    Ive seen the TSB article in the 2000 FSM. It states that DexII/III was spec for the A340E up until 2003. Though the same transmission in a Lexus SC300 of the same year calls for T-IV.

    http://soarercentral.com/sc-forum/messages/31678/134783.html

    Article from Bobistheoilguy where the consensus is leanign that T-IV is backwards compatible with a DexIII transmission, its basically a DexIII fluid with additives:

    http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/1217344/1
    http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/1422083/Re:_Toyota_T-IV_=_Dexron_III_?#Post1422083

    From 2000 FSM

    tc001t02 ATF Fluid Requirements.pdf

    tc003t99 ATF Fluids.pdf

    From 2003 FSM

    lubr.pdf

    Is there any issues possible with using the case of T-IV i have already on the DexII/III transmission?
     

    Attached Files:

  5. Jul 2, 2015 at 10:45 AM
    #5
    Trapperr

    Trapperr Well-Known Member

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    I know you probably don't want to hear such a basic answer. Personally I would look in the owners manual. If the manual doesn't specify or the manual isn't present, I'd call the service department at the local toyota dealership.

    my 02 takes Dex3 and I believe the went to T4 in 2003. If in doubt, I'd just use the Dex3 and sell that T4 to someone with a Gen2 tacoma. Better safe than sorry.
     
  6. Jul 2, 2015 at 1:08 PM
    #6
    gearcruncher

    gearcruncher Well-Known Member

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