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Advice from anyone on gear oil for transfer case

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Mavicair87, Mar 3, 2025.

Page 5 of 5
  1. Mar 14, 2025 at 6:03 AM
    #81
    xpert1111

    #81
    xpert1111 Well-Known Member

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    Is this a GL-4?
     
    xpert1111, Mar 14, 2025
    #81
  2. Mar 14, 2025 at 7:37 AM
    #82
    truckmike26

    #82
    truckmike26 New Member (2009)

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    '21 DC TRD Off-Road, '94 Pickup (Hilux) V6/Auto 4WD
    S.A.E. gear oils are graded on a different scale than engine oil. A 75W gear oil is like a 10W to 20W engine oil. Synchromax's cSt at 100 degrees C is 7.5 so it's right around a 75W to 80W on the gear oil scale.
     
    Last edited: Mar 14, 2025
    truckmike26, Mar 14, 2025
    #82
  3. Mar 14, 2025 at 7:43 AM
    #83
    TenBeers

    #83
    TenBeers Well-Known Member

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    Yeah.
    I don't think they can call it GL-4 due to their proprietary additive package. They do recommend it as a replacement for Toyota LF. It's probably fine to use, and in my opinion probably a better choice than a GL-5 gear oil. I just have issues with people telling me it's better just because they say so.
     
    TenBeers, Mar 14, 2025
    #83
    xpert1111[QUOTED] likes this.
Page 5 of 5

Products Discussed in

Mobil 1 104361 75W-90 Synthetic Gear Lube - 1 Quart (Pack of 2)
$28.12
Valvoline Flexfill SAE 75W-90 Full Synthetic Gear Oil 1 QT, Case of 4
$62.23
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