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What type of diff oil do I need for my 97 taco?

Discussion in '1st Gen. Tacomas (1995-2004)' started by FatalFoxCry, Oct 12, 2017.

  1. Oct 12, 2017 at 7:41 PM
    #1
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    Just 31's on it. (Currently being built, lots to come)
    I'm redoing seals on my rear diff and I need to know what type of diff oil I need. Any help?
     
    Last edited: Oct 12, 2017
  2. Oct 12, 2017 at 9:09 PM
    #2
    onakat

    onakat Well-Known Member

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    95Taco80 and Dalandser like this.
  3. Oct 13, 2017 at 6:41 AM
    #3
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    thanks my taco didnt come with an owners manual.
     
  4. Oct 13, 2017 at 6:03 PM
    #4
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    No mine has worn off. My truck has 360k on it. Is that your front diff? I was told it's different from front to back. And how much do I need to fill? Is it synthetic or non synthetic?
     
  5. Oct 13, 2017 at 7:24 PM
    #5
    95Taco80

    95Taco80 Blue is the fastest

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    I have the fsm for my 95.

    I am doing the trans, front diff, rear diff, xfer case, plus greasin all the driveline zerks this weekend.

    I bought 2 gallons of amsoil full synthetic gl5 80w90. This is also what the PO used. I'm also using the amsoil nlgi #2 grease.

    Brand doesn't matter but I think you'll be good with any synthetic 80w90 gl5.

    Don't forget the crush washers. @gunny1005 can supply what you need if you can wait a day or two for shipping.

    Good luck, be safe and have fun.
     
    gunny1005 likes this.
  6. Oct 13, 2017 at 7:53 PM
    #6
    SouthernYoder

    SouthernYoder If you skarred, say you skarred.

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    Are the crush washers needed if you change your front and rear diff?
     
  7. Oct 13, 2017 at 8:51 PM
    #7
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    But i should use synthetic for the truck?
     
  8. Oct 13, 2017 at 8:52 PM
    #8
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    So I'm kinda confused. That's two different answers. 75-90 or 80-90?
     
  9. Oct 13, 2017 at 9:10 PM
    #9
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    If I'm using Synthetic. Does that mean i have to change all my fluids to synthetic(Engine oil, front and rear diff, and transmission oil)Ive got a 3.4 4x4 5 speed. I just bought this truck this week as an learning experience so any information would be amazing.
     
  10. Oct 14, 2017 at 4:23 AM
    #10
    2004TacomaSR5

    2004TacomaSR5 Nemesis Prime

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    I recommend synthetics in everything, it's a far superior oil and lasts longer and lubricates better. The extra cost is worth it in the long run. 75w or 80w shouldn't matter, they're both 90wts when they come up to temperature. My owners manual says 75w90 for all the gearboxes including the rear, maybe it's a 04 thing? I dunno.
     
  11. Oct 14, 2017 at 5:28 AM
    #11
    onakat

    onakat Well-Known Member

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    owners manuals says two different oil grades because of the front diff actuator, but it says 80w-90 for the rear diff, no matter if you have the locking rear diff (which also has an actuator) or not

    But anyway, you can use 80w-90 instead of 75w-90 or vice-versa, as there isn't much of a difference between the two
     
  12. Oct 14, 2017 at 6:13 AM
    #12
    old grouch

    old grouch Well-Known Member

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    You can use either synthetic or dino in any or all of those. If you are going to use one weight oil in all the diffs it makes sense to use the same in all so you only have one kind to buy. IIRC, the manual calls for different specs for the transmission than the diffs/T-case. I will try to get my manual & post the specs later.
     
  13. Oct 14, 2017 at 8:37 AM
    #13
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    Thank you guys I really appreciate it
     
  14. Oct 14, 2017 at 9:13 AM
    #14
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    What type of diffs are in the rear for the 97 3.4 tacos?
     
  15. Oct 14, 2017 at 9:36 AM
    #15
    vern650

    vern650 Well-Known Member

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    HBS leveling kit, 31x10.50 mudders, header/imco exhaust, rear billies, LR ucas, home brewed onboard air, cb radio
    It'll most likely be the 8.4" open diff, there's also an 8" diff with an elocker but I don't think those are as common on the '97. If it has the diff locker there will be a button left of the steering wheel on the dash that says "RR DIF LOCK". As far as gear ratios, there's a code on the sticker in the door jam u can look up. It'll be something like A03B or along those lines.
     
  16. Oct 14, 2017 at 9:39 AM
    #16
    Sicyota04

    Sicyota04 Slowly but surely.

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    Here are the codes. So you can decipher yours.

    IMG_2295.jpg
     
  17. Oct 14, 2017 at 10:04 AM
    #17
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    This is what I have on my truck. Which numbers are the numbers I'm supposed to be looking at.

    1508000567810-893151356.jpg
     
  18. Oct 14, 2017 at 10:16 AM
    #18
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    will i need the additive for the diff oil?
     
  19. Oct 14, 2017 at 12:03 PM
    #19
    onakat

    onakat Well-Known Member

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    Look above "MADE IN USA", you have B03A

    no, no need for additives
     
  20. Oct 14, 2017 at 12:13 PM
    #20
    FatalFoxCry

    FatalFoxCry [OP] Well-Known Member

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    That make so much more sense thank you.
     

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