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Manual Tranny Gear Oil recommendations

Discussion in '1st Gen. Tacomas (1995-2004)' started by srsupertrap, Jan 11, 2010.

  1. Jan 11, 2010 at 8:29 PM
    #1
    srsupertrap

    srsupertrap [OP] Well-Known Member

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    2001 Tacoma SR5 V-6 TRD 4 X 4
    Bilstein 5100s, Borla 14945 S/S Exhaust, Fram Air Hog Filter, Diff Breather Mod & NGK Wires
    Goinging to change out all the manual trans & Differential gear oil on my 2001 Tacoma TRD 4X4 which has 112K on it, not sure if it was ever done. The Service manual specifies the following grades & quantities

    Transmission: API GL-4 or GL-5 75W-90 (2.6 Quarts)
    Transfer Case: API GL-4 or GL-5 75W-90 (1.1 Quarts)
    Front Differential: Hypoid API GL-5 75W-90 (1.2 Quarts)
    Rear Differential: Hypoid API GL-5 80W-90 (3.2 Quarts)

    What do you guys recommend? Looks like I need 2 gallons so the synthetic route would be pretty expensive considering Mobil 75W-90 is about $10 quart.

    TIA
     
  2. Jan 14, 2010 at 5:50 PM
    #2
    genuitybits

    genuitybits Member

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    I went with For my 01 pre-runner, I drained the OEM (it came out looking like white milk--thicker than milk and along the same pour speed as a new bottle of motor oil) and used Red Line Synthetic Oil 50304 - Red Line MT-90 Transmission Gear Oil, 75W90 which his a GL-4. I would stay away from GL-5. I am not sure if there are any brass parts in the Taco tranny (like syncros), but GL-5 contains heavy (extreme pressure) additives that eat away at brass.

    I had the a problem where I heard like metal on metal when I shifted from 1 to 2...not quite so smooth shifting. I hated to shift into second since I could hear the crunch.

    I was not quite sure what it was, but after changing to the MT-90, I never had any more problems. It's been like 15k and I never felt it that crunch again.

    Summit Racing has it for $12.49 for one quart: http://www.summitracing.com/parts/RED-50304/

    I did not know of any local retailers so opted for online. I would not nickel and dime with fluids like this. Also, don't think you mean 2 gallons. 4 quarts equals 1 gallon. You only need 2.6 quarts. I only needed two quarts. It would be safe to buy either 3 or 4. Your Taco will thank you.
     
  3. Jan 14, 2010 at 9:37 PM
    #3
    pittim

    pittim mittip

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    I plan on running all Redline fluids sometime soon (probably when it warms up haha)

    The trans and tcase will be getting MT-90, the diffs will be getting 75w-90 GL-5
     
  4. Jan 14, 2010 at 9:41 PM
    #4
    coldcanuk

    coldcanuk Well-Known Member

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    Amsoil Severe Gear 75W-90, nothing better.
     
  5. Jan 14, 2010 at 9:51 PM
    #5
    PnoyBOS5

    PnoyBOS5 Well-Known Member

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    i have never changed mine, can someone direct me to where the drain plug is located and what is the recommended fluid to use
     
  6. Jan 15, 2010 at 8:10 PM
    #6
    Ramphonic

    Ramphonic Well-Known Member

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    I run redline mt90 in the tranny and transfer case. I run redline 75w-90 in the diffs
     
  7. Jan 15, 2010 at 8:12 PM
    #7
    HondaGM

    HondaGM Roll Tide

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    redline
     
  8. Jul 28, 2010 at 3:12 PM
    #8
    MadTaco461

    MadTaco461 Well-Known Member

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    How many miles should you go for a manual transmission oil change?
     
  9. Sep 11, 2015 at 1:46 PM
    #9
    quetzal

    quetzal Well-Known Member

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  10. Sep 11, 2015 at 6:25 PM
    #10
    bry838

    bry838 Well-Known Member

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    He's changing all fluids, not just tranny...
     
  11. Sep 11, 2015 at 6:29 PM
    #11
    bry838

    bry838 Well-Known Member

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    Recommended fluid has already been stated.

    The fill and drain plugs are thin headed 24mm(I think) bolts. Tranny drain is directly on the bottom and the fill is.....oh wait your second gen....this is first gen forum...
     
  12. Sep 11, 2015 at 6:32 PM
    #12
    bry838

    bry838 Well-Known Member

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    '00 tacoma 2.7 4x4 reg cab 5speed x's 2. '01 T4R 3.4 5 speed
    So I use mt-90 in the tranny but was gunna go with a GL-5 for the transfer. Should I not and stick with GL-4? Is there brass in the transfer case.
     
  13. Sep 11, 2015 at 9:25 PM
    #13
    Fallguy6666

    Fallguy6666 Well-Known Member

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    Hes doing em all....so he needs just shy of 2 gallons....
     
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