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Toyota dealership does not use toyota gear oil

Discussion in '1st Gen. Tacomas (1995-2004)' started by skycamper, Jun 8, 2022.

  1. Jun 8, 2022 at 5:29 PM
    #1
    skycamper

    #1
    skycamper [OP] Well-Known Member

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    3" Lift w/ 5100's and EMU 882 springs , General Leaf Spring and AAL in rear with 5100. Diff drop, carrier drop, 3 degee axle shims. Trail Gear Tube Bumper. Tundra brake mod.
    Thinking of changing my transmission oil in my 2001 MT 4x4 and I wanted to do it myself this time. Last done in 2018 at toyota.

    Parts guy says, we dont carry a part number for that. I said huh??

    Oh yea just go down to the parts store like we do and get some conventional 75w90 Valvoline gear oil. Thats probably what we used in your truck.

    My receipt that day says 75w90 gear oil. So hes right there is no part number. Lol

    Thoughts? I guess its been fine this whole time.
     
    skycamper, Jun 8, 2022
    #1
  2. Jun 8, 2022 at 5:32 PM
    #2
    CodeSeven

    #2
    CodeSeven LOC: 33.781461, -115.867251

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    MTs and differentials are so simple you don't need anything special at all. Ford doesn't even change the gear oil in their diffs. It's basically a lifetime oil. I used 75-90 carquest brand.
     
    CodeSeven, Jun 8, 2022
    #2
    skycamper[OP] likes this.
  3. Jun 9, 2022 at 9:02 AM
    #3
    DashMaple

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    DashMaple Well-Known Member

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    Get some redline mT90 for the trans and call it a day. For diff and tcase those valvoline or amsoil pouches are super handy.
     
    DashMaple, Jun 9, 2022
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    beez, Wulf and Key-Rei like this.
  4. Jun 9, 2022 at 9:08 AM
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    Key-Rei

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    Key-Rei Well-Known Member

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    Toyota is in the automobile manufacturing and selling business, not the lubricants development business.

    Even the Toyota branded fluids come from another manufacturer.

    Hell at the dealer I worked at all the Toyota True Start and True2 batteries came off an Interstate Batteries truck much like the one below.

    Interstate_Batteries_T300_Kenworth.jpg
     
    Key-Rei, Jun 9, 2022
    #4
  5. Jun 9, 2022 at 9:11 AM
    #5
    3JOH22A

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    3JOH22A Toyota Gigolo

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    Yeah you're overthinking it. Toyota trucks, especially ones designed in the last century like yours, are maintainable by cave men (aka Taliban). Even generic 75W90 exceeds the requirement set in the owner's manual.

    A few years ago I asked my local dealer if they carried gear oil, and the reply was their oil came in multi-gallon pails meant for shop use.
     
    3JOH22A, Jun 9, 2022
    #5
  6. Jun 9, 2022 at 10:15 AM
    #6
    skycamper

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    skycamper [OP] Well-Known Member

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    3" Lift w/ 5100's and EMU 882 springs , General Leaf Spring and AAL in rear with 5100. Diff drop, carrier drop, 3 degee axle shims. Trail Gear Tube Bumper. Tundra brake mod.
    Got it! Yeah I start obsessing sometimes. Like right now. Looking at my owners manual. Front and rear diff take a hypoid 75w90 gear oil. But the manual trans and transfer case does not say hypoid just 75w90. Can MT90 or the Valvoline 75w90 go in all four gearboxes? Thanks for setting me on the right path here!
     
    skycamper, Jun 9, 2022
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    Wulf likes this.
  7. Jun 9, 2022 at 11:03 AM
    #7
    Hosee02

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    Hosee02 Member

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    FSM calls for 80w-90 in rear axle and
    $30 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)
    75w-90 for everything else. GL-4 for transmission (manual) and GL-5 for the axles. 80w-90 is harder to find, especially in Synthetic but lots of people use 75w90 in rear axle w/o a problem for Gen 1 tacoma.
     
    Hosee02, Jun 9, 2022
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    skycamper[OP] and Wulf like this.
  8. Jun 9, 2022 at 11:40 AM
    #8
    skycamper

    #8
    skycamper [OP] Well-Known Member

    Joined:
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    Vehicle:
    2001 Tacoma 4x4 2.7L Ext Cab
    3" Lift w/ 5100's and EMU 882 springs , General Leaf Spring and AAL in rear with 5100. Diff drop, carrier drop, 3 degee axle shims. Trail Gear Tube Bumper. Tundra brake mod.
    From my owners manual, but it looks like this is the same as what you said above. Its only below freezing here for maybe 30 nights a year and almost never stays below freezing throughout the day.

    Oil type: Hypoid Gear Oil API GL−5 Recommended oil viscosity: Front SAE 75W−90 Rear Above −18C (0F) SAE 90 Below −18C (0F) SAE 80W or 80W−90
     
    skycamper, Jun 9, 2022
    #8

Products Discussed in

Mobil 1 104361 75W-90 Synthetic Gear Lube - 1 Quart (Pack of 2)
$29.67
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