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

Changing my diff and transfer case fluid

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Stuckmaster1992, Feb 21, 2017.

  1. Feb 21, 2017 at 6:53 PM
    #1
    Stuckmaster1992

    Stuckmaster1992 [OP] Well-Known Member

    Joined:
    Feb 19, 2017
    Member:
    #210999
    Messages:
    69
    Gender:
    Male
    First Name:
    Jonathan
    Vehicle:
    2006 SR5 TRD Sport 4x4 Metallic Blue
    About to change my front and rear diff fluid along with my transfer case fluid. I know its 75W-90 my question is does it really matter what kind i use as long as the weight is good? I have over 100quarts of 75W-90 Can-Am diff fluid and was wondering if it mattered?Also wheres the best place to get the LSD additive as i have the TRD Sport Model. To my knowledge this will be the first fluid change its had in its 120,000 mile life.
     
    JoeTacoma02 likes this.
  2. Feb 22, 2017 at 8:10 PM
    #2
    Stuckmaster1992

    Stuckmaster1992 [OP] Well-Known Member

    Joined:
    Feb 19, 2017
    Member:
    #210999
    Messages:
    69
    Gender:
    Male
    First Name:
    Jonathan
    Vehicle:
    2006 SR5 TRD Sport 4x4 Metallic Blue
    Well being the person i am i found out the Canam fuild is GL5 full synthetic so YES it can be used todo the diffs and transfer case. Everyones silence was amazing. But considering its $33 a quart for the average person i guess this will only benifit me. So ill be the Taco running BRP gear oil :bananadance:
     
    JoeTacoma02 likes this.
  3. Feb 22, 2017 at 8:15 PM
    #3
    JoeTacoma02

    JoeTacoma02 Well-Known Member

    Joined:
    Jul 27, 2010
    Member:
    #40831
    Messages:
    4,846
    Gender:
    Male
    Beaverton, OR
    Vehicle:
    SWB 05 Double Cab 4x4 TRD Off Road
    Glad you answered your own question :) I assume you're the new owner. If so, congrats! I have an 05, same color as yours, and just hit 129k. Still going strong.
     
    Stuckmaster1992 [OP] likes this.
  4. Feb 23, 2017 at 5:19 AM
    #4
    Stuckmaster1992

    Stuckmaster1992 [OP] Well-Known Member

    Joined:
    Feb 19, 2017
    Member:
    #210999
    Messages:
    69
    Gender:
    Male
    First Name:
    Jonathan
    Vehicle:
    2006 SR5 TRD Sport 4x4 Metallic Blue
    Yes sir 2nd owner and shes about to roll over 122K fantastic trucks i must say!
     
  5. Feb 23, 2017 at 7:25 AM
    #5
    tgear.shead

    tgear.shead Well-Known Member

    Joined:
    Aug 20, 2015
    Member:
    #162276
    Messages:
    1,738
    Gender:
    Male
    ****NO!!!!****
    That is not necessarily the case.
    THE TRANSFER CASE HAS BRASS SYNCHRONIZERS!!!! (for [dis]engaging the front output shaft)
    For the transfer case, you MUST use a gear oil that is compatible with a **synchronized manual transmission having brass synchronizers**.
     
  6. Feb 23, 2017 at 7:32 AM
    #6
    NM Lance

    NM Lance Well-Known Member

    Joined:
    Aug 6, 2014
    Member:
    #135553
    Messages:
    1,426
    Gender:
    Male
    For the rear diff... If the gear oil type is designated "limited slip formula", the additive is not necessary correct? Might be a dumb question, have to ask though. I use cheap oils in everything except the rear diff, only because it is limited slip with the locker.
     
  7. Feb 23, 2017 at 7:33 AM
    #7
    Northern Taco

    Northern Taco Well-Known Member

    Joined:
    Oct 8, 2015
    Member:
    #166156
    Messages:
    2,170
    Gender:
    Male
    Vehicle:
    2005 Tacoma trd off road 2020 tundra trd sport
    use gl5. It won't hurt your brass synchronizer's, lots of people run gl5 for thousands of miles and it doesn't hurt a thing, including me. If Toyota reccomends it you're all good.
     
  8. Feb 23, 2017 at 7:35 AM
    #8
    Northern Taco

    Northern Taco Well-Known Member

    Joined:
    Oct 8, 2015
    Member:
    #166156
    Messages:
    2,170
    Gender:
    Male
    Vehicle:
    2005 Tacoma trd off road 2020 tundra trd sport
    You have limited slip and a locker? I thought trd off roads with factory e locker had open diff.
     
  9. Feb 23, 2017 at 7:37 AM
    #9
    tgear.shead

    tgear.shead Well-Known Member

    Joined:
    Aug 20, 2015
    Member:
    #162276
    Messages:
    1,738
    Gender:
    Male
    Most gl5 oils are specifically made to be compatible with manual transmissions.
    Thing is, he is talking about using a gear oil that is distributed by a SNOWMOBILE MANUFACTURER. Snowmobiles do not have synchronized transmissions. They have a CVT, along with a single ratio CHAIN CASE.
     
  10. Feb 23, 2017 at 7:39 AM
    #10
    Northern Taco

    Northern Taco Well-Known Member

    Joined:
    Oct 8, 2015
    Member:
    #166156
    Messages:
    2,170
    Gender:
    Male
    Vehicle:
    2005 Tacoma trd off road 2020 tundra trd sport
    I missed the whole brp part. So if this is true I wouldn't recommend using it.
     
  11. Feb 23, 2017 at 7:39 AM
    #11
    tgear.shead

    tgear.shead Well-Known Member

    Joined:
    Aug 20, 2015
    Member:
    #162276
    Messages:
    1,738
    Gender:
    Male
    Depends. Some people with mechanical ls differentials report that even gear oils specifically saying that they have ls additive in them, will result in premature activation of limited slip, causes tire chirping when cornering. The solution is to add some more additive to the oil.

    Also note that limited slip additive is a very bad thing for synchronizers.
     
  12. Feb 23, 2017 at 7:40 AM
    #12
    NM Lance

    NM Lance Well-Known Member

    Joined:
    Aug 6, 2014
    Member:
    #135553
    Messages:
    1,426
    Gender:
    Male
    I was under the impression that open diff meant no locker or limited slip? I believe I have both in the rear, I definitely have the elocker. My limited slip may be up front? Damn, where's my manual. I hate going to Toyota for gear oil, so expensive!
     
  13. Feb 23, 2017 at 7:43 AM
    #13
    NM Lance

    NM Lance Well-Known Member

    Joined:
    Aug 6, 2014
    Member:
    #135553
    Messages:
    1,426
    Gender:
    Male
    This I did not know. I have done this for many thousands of miles too. I may be draining some oil this weekend...
     
  14. Feb 23, 2017 at 7:54 AM
    #14
    tgear.shead

    tgear.shead Well-Known Member

    Joined:
    Aug 20, 2015
    Member:
    #162276
    Messages:
    1,738
    Gender:
    Male
    Limited slip additive is a friction modifier (reduces friction), and synchronizers are very friction dependent. So limited slip additive can contribute to harder shifting, gear grinding, etc.
     
  15. Feb 23, 2017 at 8:00 AM
    #15
    Northern Taco

    Northern Taco Well-Known Member

    Joined:
    Oct 8, 2015
    Member:
    #166156
    Messages:
    2,170
    Gender:
    Male
    Vehicle:
    2005 Tacoma trd off road 2020 tundra trd sport
    I'm not 100% on newer Tacoma's, but I know my 2005 has a simple open diff with an e locker when needed. A limited slip differential was only found on the trd sport models as far as I know.
     
  16. Feb 23, 2017 at 8:03 AM
    #16
    tgear.shead

    tgear.shead Well-Known Member

    Joined:
    Aug 20, 2015
    Member:
    #162276
    Messages:
    1,738
    Gender:
    Male
    Right, you have a trd offroad. OP has a trd sport. Electronic LSD was a feature added for MY2009 for *all* models, so any trd sport up to and including MY2008 will have a mechanical LSD.
     
  17. Feb 23, 2017 at 8:09 AM
    #17
    Northern Taco

    Northern Taco Well-Known Member

    Joined:
    Oct 8, 2015
    Member:
    #166156
    Messages:
    2,170
    Gender:
    Male
    Vehicle:
    2005 Tacoma trd off road 2020 tundra trd sport
    I should have been more clear with who I was responding to, NM Lance. He's profile just says 2014 trd.

    The electronic LSD is basically done through the abs system, so no need for friction additive for the rear diff in those models.
     
  18. Feb 23, 2017 at 8:23 AM
    #18
    NM Lance

    NM Lance Well-Known Member

    Joined:
    Aug 6, 2014
    Member:
    #135553
    Messages:
    1,426
    Gender:
    Male
    Between the two of you, you have answered my question (thank you!). I use 80W-90 in the rear instead of Toyota's 85W-90, so I may buck-up and buy Toyota's overpriced crap in addition to the friction modifier.

    I may end up switching to the redline MT90 in my transmission, if it is as good as everyone says. I definitely used limited slip oil in my transmission at the last oil change, so I will probably just drain and refill with MT90, once again, just to be on the safe side.

    I have always used cheap/on sale oil in everything, the only thing that concerns me is the elocker. I definitely don't want to ruin that.
     
  19. Feb 23, 2017 at 6:53 PM
    #19
    Stuckmaster1992

    Stuckmaster1992 [OP] Well-Known Member

    Joined:
    Feb 19, 2017
    Member:
    #210999
    Messages:
    69
    Gender:
    Male
    First Name:
    Jonathan
    Vehicle:
    2006 SR5 TRD Sport 4x4 Metallic Blue
    BRP does side by sides, Jet Skis, 4 wheelers.....hell im surprised they dont have a car out yet lol the oil i used actually exceeds Toyota standards. So im running at 150% currently.
     
  20. Feb 24, 2017 at 5:33 AM
    #20
    tgear.shead

    tgear.shead Well-Known Member

    Joined:
    Aug 20, 2015
    Member:
    #162276
    Messages:
    1,738
    Gender:
    Male
    And if you enjoy owning crap that breaks down in a severe manner at 100 km intervals, then go ahead and go with them. Personally, I've seen enough bombardier crap break down badly enough that I'll avoid even being within a hundred feet of anything they make for fear that it will shoot parts out at dangerous speeds.
     

Products Discussed in

To Top