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rear differential oil

Discussion in '2nd Gen. Tacomas (2005-2015)' started by bigrog74, Jun 29, 2010.

  1. Jun 29, 2010 at 8:29 AM
    #1
    bigrog74

    bigrog74 [OP] Well-Known Member

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    I'm due for my 30,000 mile service and I notice in my maintenance log I need to change my rear differential oil. Has anyone ever done this? Is it hard to get to? What oil do I replace it with?

    Any help is appreciated.
     
  2. Jun 29, 2010 at 8:32 AM
    #2
    Asgard

    Asgard Well-Known Member

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  3. Jun 29, 2010 at 8:34 AM
    #3
    NAAC3TACO

    NAAC3TACO Just east of crazy

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    You have a TRD off road, which means you don't have limited slip. You can use 80w90 or synthetic 75w90.
     
  4. Jun 29, 2010 at 8:43 AM
    #4
    jnoley07

    jnoley07 Well-Known Member

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    which would be the best to use? I am gonna change mine out this wknd. And is it the same for the front diff as well?
     
  5. Jun 29, 2010 at 8:44 AM
    #5
    bigrog74

    bigrog74 [OP] Well-Known Member

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    My truck does have thr RR Differential Lock. It is part of the Avalanch Off Road package. Thanks.
     
  6. Jun 29, 2010 at 8:47 AM
    #6
    NAAC3TACO

    NAAC3TACO Just east of crazy

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    Since it doesn't cost much more and gives your truck more protection, I would run the synthetic 75w90. However, Toyota used conventional oil at the factory, so if you're on a tight budget, you'll be fine with that too.
     
  7. Jun 29, 2010 at 8:48 AM
    #7
    jnoley07

    jnoley07 Well-Known Member

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    no, its just part of the Off Road pkg. All TRD Off Roads have the RR Diff Lock.
     
  8. Jun 29, 2010 at 8:51 AM
    #8
    NAAC3TACO

    NAAC3TACO Just east of crazy

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    You only need limited slip additive if you have the 05-08 lsd rear end. The locking diff does not need it.
     
  9. Jun 29, 2010 at 10:28 AM
    #9
    RainDodger

    RainDodger YGWYPF

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    Neither does an '09+ Sport. The limited slip is handled by the brakes, NOT the differential as of '09. For '09+, just use 75W-90.
     
  10. Jun 29, 2010 at 10:36 AM
    #10
    DeeKay21

    DeeKay21 Lieutenant Dan.

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    I did mine a little over a month ago but I have a Sport so mine is the LSD. I used 80W-90 for the rear diff and a 4oz. bottle of Redline friction modifier. Now bangs or grinding noises. Then for the front diff and transfer case, I used Redline 75W-90 synthetic gear oil. So far, no issues whatsoever. I know the OP drives an off-road edition but just in case any of you sports guys had questions as well.:rolleyes:
     
  11. Jun 29, 2010 at 12:20 PM
    #11
    MachoTaco10

    MachoTaco10 Well-Known Member

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    so 2010 sports dont need the friction modifier? I thought it had limited slip diff, vsc, and traction control? no?
     
  12. Jun 29, 2010 at 12:51 PM
    #12
    RainDodger

    RainDodger YGWYPF

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    Like I said above, '09 and newer do not use a mechanical LSD - no clutches in the diff. They use a new system that controls the throttle and brakes to limit slip. It's not inside the diff, so you don't need anything but pure 75W-90. It's this way on my '09 SPORT. Perhaps the Off Road is different, but an O.R. owner that knows, can chime in.
     
  13. Jun 29, 2010 at 1:19 PM
    #13
    jnoley07

    jnoley07 Well-Known Member

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    what brand do you guys use? I would like to run synthetic but if its over 10 bucks a qt, I have to say hell to the nah. I was thinking of running the Lucas 75w-90, has anyone ran it?
     
  14. Jun 29, 2010 at 4:31 PM
    #14
    george3

    george3 Well-Known Member

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  15. Jun 30, 2010 at 7:33 AM
    #15
    RainDodger

    RainDodger YGWYPF

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    None yet! It's new!
    Personally, I only use Red Line lubes. I've used them for years in everything I own that uses oil... cars, trucks, bikes, generators, tractor. It's over your price break though.

    In the diffs I use Red Line 75W-90. In the tranny and transfer case (6speed) I use Red Line MT-90.
     
  16. Jun 30, 2010 at 9:00 AM
    #16
    night_angel

    night_angel Well-Known Member

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    if my truck is TRD Sport, "LSD", can I use Castrol Syntec 75W90? its GL-5

    DSC01490.jpg
    DSC01489.jpg
     
  17. Jun 30, 2010 at 9:40 AM
    #17
    RainDodger

    RainDodger YGWYPF

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    What YEAR is your TRD Sport???? If it's an '09 or newer, the LSD is handled with braking and throttle, NOT the differential. Plain 75W-90 should be just fine.

    If it's older than an '09, wolfpack is probably right.

    If it meets the same specs as the gear oil spec in your manual, it is FINE.

    edit - I did just see your sig... if still accurate and you have an '05, listen to wolfpack...
     
  18. Jun 30, 2010 at 9:42 AM
    #18
    night_angel

    night_angel Well-Known Member

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    has to be 80W90 mineral oil then?
     
  19. Jul 1, 2010 at 8:00 AM
    #19
    korslite

    korslite Well-Known Member

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    I just changed my rear diff oil on tuesday and used 3qts of Valvoline's 80w90 LSD gear oil with a 4oz tube of CRC friction modifier and it has worked great for me. My LSD was chattering a lil bit before and it immediately went away with this lube combo. BTW mine is an '08 sport so it has the mechanical LSD...
     
  20. Dec 4, 2010 at 3:01 PM
    #20
    romafern

    romafern Well-Known Member

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    stock and very pissed about the issues
    Machine gun mount. Would love to blow the shit out of it since it has nothing but issues. QA at Toyota USA is shit. Start making them in Japan for Christ's Sake!
    can mobil one 75w90 LS be used in a trd off road locker diff? how bout in the xfer case?
     
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