1. Welcome to Tacoma World!

    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 Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Rear diff shudders after changing fluid

Discussion in '2nd Gen. Tacomas (2005-2015)' started by TacoSeasoning500k, Sep 1, 2023.

  1. Sep 1, 2023 at 2:36 PM
    #1
    TacoSeasoning500k

    TacoSeasoning500k [OP] Member

    Joined:
    Oct 5, 2022
    Member:
    #407375
    Messages:
    10
    2008 Tacoma TRD Sport Prerunner V6 4x4

    I just changed my rear diff oil and now it shudders during slow sharp turns moving forward and in reverse. I used Valvoline FlexFill Full Synthetic SAE 75W-90 Gear Oil. I added 3 qts. Which brought it right up to the fill plug. Anyone know where I went wrong? What is causing this shudder?
     
  2. Sep 1, 2023 at 2:39 PM
    #2
    HondaGM

    HondaGM CallSign Monke

    Joined:
    Oct 28, 2009
    Member:
    #25056
    Messages:
    11,115
    First Name:
    James
    South-Pole, Alabama
    Vehicle:
    2023 access cab V6
    PreRunner?
     
  3. Sep 1, 2023 at 2:40 PM
    #3
    gilligoon

    gilligoon Well-Known Member

    Joined:
    Aug 22, 2017
    Member:
    #227638
    Messages:
    739
    First Name:
    Goon
    Watoosa Ridge, GA
    Vehicle:
    2017 Quicksand TRD OR DCSB
    Bilstein, ICON, Mobtown, Southern Style, Warn, SOS, Nitto, ARE, Northstar
    If you are sure it is only the rear diff, and you just changed fluid, and you ALSO added LS friction modifier... just drive it in circles in an empty parking lot. If you didn't add LS fluid... do that.
     
    Last edited: Sep 1, 2023
  4. Sep 1, 2023 at 3:39 PM
    #4
    TacoSeasoning500k

    TacoSeasoning500k [OP] Member

    Joined:
    Oct 5, 2022
    Member:
    #407375
    Messages:
    10
    I think it’sSR5
     
  5. Sep 1, 2023 at 3:41 PM
    #5
    TacoSeasoning500k

    TacoSeasoning500k [OP] Member

    Joined:
    Oct 5, 2022
    Member:
    #407375
    Messages:
    10
    I didn’t add LS fluid. The bottles of diff oil say it’s already in it. Does it need more?
     
  6. Sep 1, 2023 at 4:56 PM
    #6
    Chuy

    Chuy Well-Known Member

    Joined:
    Aug 4, 2008
    Member:
    #8328
    Messages:
    3,301
    Gender:
    Male
    Lakeside, CA
    Vehicle:
    07 V6 DCLB 4X4 Sport
    Silver Taco
    It should not need the additive but maybe your gears have tighter tolerance and needs it. I use the same gear oil in my 07 and it runs well without any additives.
     
  7. Sep 1, 2023 at 5:05 PM
    #7
    TacoSeasoning500k

    TacoSeasoning500k [OP] Member

    Joined:
    Oct 5, 2022
    Member:
    #407375
    Messages:
    10
    Ok. I might run it for another 20 miles or so and see if it loosens up. From what I’ve read on other threads some people with the LSD have good luck adding StaLube EquaTorque Friction Modifier. Might give that a try
     
  8. Sep 1, 2023 at 5:54 PM
    #8
    TacoSeasoning500k

    TacoSeasoning500k [OP] Member

    Joined:
    Oct 5, 2022
    Member:
    #407375
    Messages:
    10
    Final verdict: I ran it another 5 miles or so and now it’s smooth as butter. I let everything cool down to make sure it wasn’t just a result of warming up and it’s still good . I’m pretty sure it’s always used conventional so maybe it needed some time to work the synthetic into all the spaces.
     
  9. Sep 1, 2023 at 6:16 PM
    #9
    Sharpish

    Sharpish Well-Known Member

    Joined:
    Jan 4, 2016
    Member:
    #173981
    Messages:
    3,730
    Gender:
    Male
    First Name:
    Brian
    Victoria, British Columbia, Canada
    Vehicle:
    2012 Tacoma TRD OR 4x4
    Does the diff have a sticker on it that says “LSD oil”
     

Products Discussed in

To Top