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Transfer Case Oil Change

Discussion in '3rd Gen Tundras (2014+)' started by vanthesupreme, Oct 13, 2020.

  1. Oct 13, 2020 at 8:45 AM
    #1
    vanthesupreme

    vanthesupreme [OP] I'm Batman

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    I have looked at other threads on changing the diff fluid along with the transfer case. I have also watched a few YouTube videos on the process, but I an needing to know if the transfer case can use 75w-90 gear oil just like the rest of the diff fluids or if I need to use just 75w? The one youtube video I watched the guy used 75w-90 in the transfer. All input will be greatly appreciated and thanks in advance
     
  2. Oct 13, 2020 at 9:10 AM
    #2
    duerrs

    duerrs Semper Fi!

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    Wondering the same thing. On my 2008, I put Royal Purple 75W90 in all three. On my 2020, I've put Amsoil 75W90 in front and rear but not the transfer yet. I'm told they made a change to the transfer case in 2014 or some MY after that. Amsoil has no recommended oil for this yet.
     
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  3. Oct 13, 2020 at 9:14 AM
    #3
    Fotnot

    Fotnot SSEM #14

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    I have all my stuff being delivered today (supposedly) to change out my front/rear diff and my transfer case. I'm using Mobil 1 Sythetic 75w-90. A few places I've found have all said that using that is completely fine. Now, per manual, specs, etc...they all say straight 75. I mentioned it to my dad yesterday actually that has owned a shop for 35+ years and said it is fine to do that. This is no means professional advice, but if it makes you feel better, I did my job. :cheers:
     
  4. Oct 13, 2020 at 9:18 AM
    #4
    AZBoatHauler

    AZBoatHauler Desert Dweller

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  5. Oct 13, 2020 at 10:44 AM
    #5
    Porkchop Express

    Porkchop Express Its all in the reflexes

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    yes. I put Lucas synthetic in all three.
    75w90
     
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  6. Oct 13, 2020 at 12:11 PM
    #6
    vanthesupreme

    vanthesupreme [OP] I'm Batman

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    Thank you all for your input greatly appreciated!!
     
  7. Oct 13, 2020 at 12:55 PM
    #7
    OTX

    OTX 2018 Tundra SR5 Off-road Crewmax 4x4

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    I have been going back and forth about what oil to use on my 2018 Tundra transfer case. From my research, 75w90 is not really suitable as it’s much thicker than the 75w oil Toyota uses. Then you have Ravenol which is a 75w oil but from what I have researched is also quite different from the Toyota fluid when an oil analysis was done.

    I decided to get the original Toyota 75w oil and not chance it. It hurt paying $125 for 2 quarts of this stuff but when it only has to be changed every 60,000 miles, it’s worth it. A transfer case cost about $2800!!!. For the front and rear, I went ahead and put in 75w90 Mobil oil. My advice is go for the real deal as there is no real substitute for it!.
     
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  8. Oct 17, 2020 at 7:47 AM
    #8
    Rob's Inferno

    Rob's Inferno New Member

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    I bought and used Toyota 75w .truck is still under warranty so.And when i change the t case at 35000miles ,fluid looked as clean as the brand new fluid
     
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  9. Oct 17, 2020 at 9:30 AM
    #9
    The Patriot 1776

    The Patriot 1776 Asskick Fabrication: Shit Is Sick!

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    $125 for 2 quarts is asinine. Next time get
    https://www.blauparts.com/ravenol-manual-transmission-fluid-mtf-3-75w-1l.html
     
    vanthesupreme [OP] likes this.
  10. Oct 17, 2020 at 9:43 AM
    #10
    Stumpjumper

    Stumpjumper New Member

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    I changed Tacoma at 50k and same thing. Unless you do a lot of driving in 4wd it is not going to look dirty. I am not changing it in my Tundra.
     
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  11. Oct 17, 2020 at 10:24 AM
    #11
    Vector W8

    Vector W8 Old guy with a lot of expensive habits.

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    Use the Toyota 75 weight oil. It has additives that prevent solenoid stick. Many people have changed it with a different oil and have had problems with shifting between two and 4 wheel drive. And then it not wanting to disengage.
     
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  12. Oct 17, 2020 at 10:35 AM
    #12
    Uhhhh....

    Uhhhh.... New Member

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    As some have already said, t-case calls for 75w. Diffs call for 75w-90.
     
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  13. Oct 17, 2020 at 1:55 PM
    #13
    Js18tundra

    Js18tundra New Member

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    I’ve been using redline mt-Lv for about 10k miles, it has worked flawlessly, shifts the same as stock, and its synthetic.
     
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  14. Oct 17, 2020 at 5:08 PM
    #14
    Sumo91

    Sumo91 Somewhat new member

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    Bilstein 6112/5160 leveled Big ole dent in bedside
    Ravenol 75w works great in mine, I'm in 4wd a few times a month at least and I drive the piss outta my truck
     
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  15. Oct 17, 2020 at 7:33 PM
    #15
    Fotnot

    Fotnot SSEM #14

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    I knocked mine out this weekend with a lil helo from my dad since he was helping me do brakes. Not difficult, but I forgot how much gear oil stinks. When I did the transfer case, it had more velocity than expected and got it on my clothes. They were trash clothes anyway, but it had the gear oil stank on it ha. All 3 were easy to do tho. We'll see how the transfer case does with mobil 1 75-90
     
  16. Oct 17, 2020 at 8:37 PM
    #16
    OTX

    OTX 2018 Tundra SR5 Off-road Crewmax 4x4

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    I ended up changing the transfer case fluid today in less than 20 minutes(mostly just waiting for it to drain). I am not a car guy whatsoever and I couldn’t believe how easy it was to do even without the truck being jacked up. Just take off the fill plug first and then do the same with the drain and let it drain for 10 minutes or so and then I put the Toyota 75w fluid in using a transfer fluid pump. Super easy.
     
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