1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site
    Quick Links: Dash camera Woolwax Undercoating 1 Year Update I'm going to start something... Engine compartment teleports ratchet to another universe DIY: Fiberglass Eyelids Truck Bed Crane

Diff and T-case Fluid Change

Discussion in 'General Tundra Discussion' started by pvn.beluga, Mar 12, 2022.

  1. Mar 12, 2022 at 2:32 PM
    #1
    pvn.beluga

    #1
    pvn.beluga [OP] New Member

    Joined:
    Dec 28, 2020
    Member:
    #56744
    Messages:
    2,009
    Gender:
    Male
    First Name:
    Phuc (Phooc)
    Connecticut
    Yes, I’ve searched the forums… and this question is definitely asked quite often.

    Who has recently done their changes and what did you guys use?

    I’m looking at Mobil1 75w-95 for both diffs and t-case.

    Does the t-case need a different type of gear oil or could I use the same as my diffs?
     
    pvn.beluga, Mar 12, 2022
    #1
    nopsFU likes this.
  2. Mar 13, 2022 at 7:25 PM
    #2
    Sumo91

    #2
    Sumo91 Busy with projects

    Joined:
    Nov 16, 2019
    Member:
    #38726
    Messages:
    1,494
    Gender:
    Male
    TN
    Vehicle:
    2014 MGM Tundra Platinum 4x4
    Bilstein 8112/8100 3.25in lift Dobinson leaf springs 2.1in lift Level8 MK6 wheels Big ole dent in bedside
    75-90w of your choice for the front and rear. Go with toyota 75w since it will be readily availableat your dealership within a day or two of ordering.

    I had ravenol 75w and just changed mine and it was much darker than I would have liked. I'm running HPL 75w now, and HPL 75w90 in the diffs.

    Alot of people run 75w90 in the transfer case, some have good results, some have problems. So I'd recommend the 75w.

    https://www.tundras.com/threads/transfer-case-fluid-after-59k-w-pics.102696/
     
    Sumo91, Mar 13, 2022
    #2
    pvn.beluga[OP] likes this.
  3. Mar 13, 2022 at 7:35 PM
    #3
    14burrito

    #3
    14burrito IG @14burrito

    Joined:
    Dec 14, 2014
    Member:
    #798
    Messages:
    3,813
    Vehicle:
    2014 SR5 CM 4x4 5.7
    @ADSracingshocks - F 3 point ohh / R 2.5 - w/clickers @camburgracing - uniball UCA @rigidindustries - 40" amber/white split, Dually XL, D2 @coopertires - 35/12.5/17 STT MAXX @bayareametalfab - low pro bed rack @toyotausa - 17" rock warrior @sdhqoffroad - rock sliders, a-pillar @hondogarage / @apple / @gaiagps / @dualgps- navigation @wheelersoffroadinc - superbumps
    Tcase = 75w
     
    14burrito, Mar 13, 2022
    #3
    Ely010606 and pvn.beluga[OP] like this.
  4. Mar 16, 2022 at 6:37 AM
    #4
    pvn.beluga

    #4
    pvn.beluga [OP] New Member

    Joined:
    Dec 28, 2020
    Member:
    #56744
    Messages:
    2,009
    Gender:
    Male
    First Name:
    Phuc (Phooc)
    Connecticut
    pvn.beluga, Mar 16, 2022
    #4
  5. Mar 16, 2022 at 7:05 AM
    #5
    Randydw

    #5
    Randydw New Member

    Joined:
    May 20, 2021
    Member:
    #63337
    Messages:
    236
    Gender:
    Male
    First Name:
    Randy
    Ozark,mo
    Vehicle:
    2021 platinum crew cab
    Did front and rear differential with royal purple 75/90 have not done transfer case yet
     
    Randydw, Mar 16, 2022
    #5
  6. Mar 16, 2022 at 7:05 AM
    #6
    pvn.beluga

    #6
    pvn.beluga [OP] New Member

    Joined:
    Dec 28, 2020
    Member:
    #56744
    Messages:
    2,009
    Gender:
    Male
    First Name:
    Phuc (Phooc)
    Connecticut
    Wasn't Royal Purple one of the worse gear oil to use?

     
    pvn.beluga, Mar 16, 2022
    #6
  7. Mar 16, 2022 at 9:05 AM
    #7
    14burrito

    #7
    14burrito IG @14burrito

    Joined:
    Dec 14, 2014
    Member:
    #798
    Messages:
    3,813
    Vehicle:
    2014 SR5 CM 4x4 5.7
    @ADSracingshocks - F 3 point ohh / R 2.5 - w/clickers @camburgracing - uniball UCA @rigidindustries - 40" amber/white split, Dually XL, D2 @coopertires - 35/12.5/17 STT MAXX @bayareametalfab - low pro bed rack @toyotausa - 17" rock warrior @sdhqoffroad - rock sliders, a-pillar @hondogarage / @apple / @gaiagps / @dualgps- navigation @wheelersoffroadinc - superbumps
    :eek2:

    Who conducted these tests, all the same source or scattered datasets?
     
    14burrito, Mar 16, 2022
    #7
  8. Mar 16, 2022 at 9:10 AM
    #8
    pvn.beluga

    #8
    pvn.beluga [OP] New Member

    Joined:
    Dec 28, 2020
    Member:
    #56744
    Messages:
    2,009
    Gender:
    Male
    First Name:
    Phuc (Phooc)
    Connecticut
    Lol, I got this from another thread on here...
     
    pvn.beluga, Mar 16, 2022
    #8
    14burrito[QUOTED] likes this.
  9. Mar 16, 2022 at 9:10 AM
    #9
    pvn.beluga

    #9
    pvn.beluga [OP] New Member

    Joined:
    Dec 28, 2020
    Member:
    #56744
    Messages:
    2,009
    Gender:
    Male
    First Name:
    Phuc (Phooc)
    Connecticut
    pvn.beluga, Mar 16, 2022
    #9
    14burrito likes this.
  10. Mar 16, 2022 at 10:17 AM
    #10
    14burrito

    #10
    14burrito IG @14burrito

    Joined:
    Dec 14, 2014
    Member:
    #798
    Messages:
    3,813
    Vehicle:
    2014 SR5 CM 4x4 5.7
    @ADSracingshocks - F 3 point ohh / R 2.5 - w/clickers @camburgracing - uniball UCA @rigidindustries - 40" amber/white split, Dually XL, D2 @coopertires - 35/12.5/17 STT MAXX @bayareametalfab - low pro bed rack @toyotausa - 17" rock warrior @sdhqoffroad - rock sliders, a-pillar @hondogarage / @apple / @gaiagps / @dualgps- navigation @wheelersoffroadinc - superbumps
    14burrito, Mar 16, 2022
    #10
    pvn.beluga[QUOTED][OP] likes this.
  11. Mar 16, 2022 at 10:39 AM
    #11
    Stumpjumper

    #11
    Stumpjumper Not a new member

    Joined:
    Sep 15, 2016
    Member:
    #4546
    Messages:
    3,428
    Gender:
    Male
    Fate, Tx
    Vehicle:
    2017 Tundra TSS 4x4
    When I changed the tcase fluid on my Tacoma at 50k it looked like I poured it out of the bottle. For that reason I have not changed it in the Tundra. I probably will do it in a couple of months.
     
    Stumpjumper, Mar 16, 2022
    #11
    AZBoatHauler likes this.
  12. Mar 16, 2022 at 10:46 AM
    #12
    pvn.beluga

    #12
    pvn.beluga [OP] New Member

    Joined:
    Dec 28, 2020
    Member:
    #56744
    Messages:
    2,009
    Gender:
    Male
    First Name:
    Phuc (Phooc)
    Connecticut
    I saw a few guys running it a little longer than 30k. I'm reaching 30k, so I figured I'd just do the changes.
     
    pvn.beluga, Mar 16, 2022
    #12
    14burrito likes this.
  13. Mar 16, 2022 at 10:52 AM
    #13
    omgboost

    #13
    omgboost The Accountant

    Joined:
    Apr 19, 2019
    Member:
    #29334
    Messages:
    1,090
    Gender:
    Male
    East Coast
    Vehicle:
    2012 Sequoia Platinum
    omgboost, Mar 16, 2022
    #13
    pvn.beluga[OP] likes this.
  14. Mar 17, 2022 at 10:01 AM
    #14
    WVI

    #14
    WVI New Member

    Joined:
    May 23, 2021
    Member:
    #63430
    Messages:
    199
    Vehicle:
    @008 Tundra Limited
    Questions:
    For towing, what weightshould be in the differential?
    Are they actually a limited slip rear end or something else?
    I dont quite understand how these rear diffs work in 4x4. Do they need limited slip additive?
    Thanks.
     
    WVI, Mar 17, 2022
    #14
  15. Mar 17, 2022 at 12:17 PM
    #15
    Stumpjumper

    #15
    Stumpjumper Not a new member

    Joined:
    Sep 15, 2016
    Member:
    #4546
    Messages:
    3,428
    Gender:
    Male
    Fate, Tx
    Vehicle:
    2017 Tundra TSS 4x4
    Rear diffs don't work any different in 4wd versus 2wd. I am not sure what year they switched to brake actuated anti slip but it was at least 5 years ago. So you probably don't need the additive or fluid with built in additive.
     
    Stumpjumper, Mar 17, 2022
    #15
    WVI[QUOTED] and 14burrito like this.
  16. Mar 17, 2022 at 12:59 PM
    #16
    pvn.beluga

    #16
    pvn.beluga [OP] New Member

    Joined:
    Dec 28, 2020
    Member:
    #56744
    Messages:
    2,009
    Gender:
    Male
    First Name:
    Phuc (Phooc)
    Connecticut
    From what I read, you only need LS if you are running an actual locker - not Tundras Auto LSD. But, doesn’t hurt if your gear oil has it.
     
    pvn.beluga, Mar 17, 2022
    #16
    WVI[QUOTED] and 14burrito like this.
  17. Mar 17, 2022 at 4:51 PM
    #17
    WVI

    #17
    WVI New Member

    Joined:
    May 23, 2021
    Member:
    #63430
    Messages:
    199
    Vehicle:
    @008 Tundra Limited
    Thanks much!
     
    WVI, Mar 17, 2022
    #17
  18. Mar 19, 2022 at 9:12 PM
    #18
    Terndrerrr

    #18
    Terndrerrr 925000 miles to go

    Joined:
    Jul 8, 2019
    Member:
    #32965
    Messages:
    6,124
    Gender:
    Male
    Music City
    Vehicle:
    6UR-FE
    RAS, 285/75 DTs, dual battery, SS3 Pro
    I bought Amsoil severe gear for the diffs and Ravenol for the TC. Going to drain and fill all three soon.

    Does anyone have crush washer part numbers handy for swapping diff fluid or TC fluid in a late 2nd gen? My truck is a ‘21. I’ve read that some of the plugs don’t even use washers. Trying to find where I read that…
     
    Terndrerrr, Mar 19, 2022
    #18
    JLS in WA likes this.
  19. Mar 19, 2022 at 9:58 PM
    #19
    Winning8

    #19
    Winning8 New Member

    Joined:
    Jul 4, 2019
    Member:
    #32819
    Messages:
    2,039
    Gender:
    Male
    Da Bay Area
    Vehicle:
    2019 MGM DC 4x4 SR5
    Mumba 18x9 ET 12, BFG KO2, FOX suspension, diamond back HD cover w/ rack, LED head & fog light bulb, TRD rear sway bar, timbren enhancement, RAS helper spring, avs auto shade, Carhartt front seat cover, bench seat cover
    Winning8, Mar 19, 2022
    #19
  20. Mar 20, 2022 at 5:07 AM
    #20
    Stumpjumper

    #20
    Stumpjumper Not a new member

    Joined:
    Sep 15, 2016
    Member:
    #4546
    Messages:
    3,428
    Gender:
    Male
    Fate, Tx
    Vehicle:
    2017 Tundra TSS 4x4
    Stumpjumper, Mar 20, 2022
    #20
  21. Mar 20, 2022 at 12:37 PM
    #21
    pvn.beluga

    #21
    pvn.beluga [OP] New Member

    Joined:
    Dec 28, 2020
    Member:
    #56744
    Messages:
    2,009
    Gender:
    Male
    First Name:
    Phuc (Phooc)
    Connecticut
    Sold by Blauparts though - so you're looking at additional shipping costs.
     
    pvn.beluga, Mar 20, 2022
    #21
    WVI likes this.
  22. Mar 20, 2022 at 12:41 PM
    #22
    JLS in WA

    #22
    JLS in WA New Member

    Joined:
    Jan 1, 2020
    Member:
    #40610
    Messages:
    1,383
    Gender:
    Male
    Somewhere in the basalt rocks with my dogs
    Vehicle:
    2008 White DC Limited 4x4
    Drahthaar Transport Unit
    Mine is due for this in a month too. I ordered Amsoil this time. I used to used it in my Ram 2500 I towed a lot with and had great luck with it.


    I know the 2nd Gen need crush washers.
     
    JLS in WA, Mar 20, 2022
    #22
    WVI and Terndrerrr[QUOTED] like this.
Register FREE to Reply!

Products Discussed in

TRIAX Synergy Gear Max 75W-90 GL-5 Limited Slip, Ultra Long Drain 500k Miles, Manual Transmission, Gear/Differential Lubricant (1 Gallon)
$38.49
To Top