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Front/rear diff, xfer case, & trans fluids..

Discussion in 'General Tundra Discussion' started by Spvrtan, Jun 5, 2017.

  1. Jun 5, 2017 at 11:21 AM
    #1
    Spvrtan

    Spvrtan [OP] Amateur fabricator

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    Diffs/case

    Toyota recommends 75w-85 but I hear it's better to go with 75w-90 for our trucks if you use it heavily. Since AMSOIL is so hard to find and expensive, I'm thinking about going with one of these..

    https://www.amazon.com/Red-Line-579...&qid=1496687141&sr=8-1&keywords=amsoil+75w-90

    https://www.amazon.com/Mobil-104361...000ONZXPK/ref=cm_cr_arp_d_product_top?ie=UTF8

    Transmission


    I'll probably lean toward sticking with OEM fluid unless someone knows of a better alternative but I saw two Toyota fluids out there..

    Do I go with this:
    https://www.amazon.com/Toyota-Genui...&qid=1496686378&sr=8-1&keywords=toyota+75w-85

    ..or this:
    https://www.amazon.com/dp/B004SKRLGE/ref=psdc_15719351_t3_B004SL9HP6

    I'm at almost 55k and am going to do a drain/fill maintenance on it.
     
    Last edited: Jun 5, 2017
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  2. Jun 5, 2017 at 11:54 AM
    #2
    1UPPER

    1UPPER New Member

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    Just a heads up if you do your 4.88 gears soon. When I spoke with Auburn gears they recommend Non synthetic oil
    80-90 Weight oil with additive. They also said not to use Aimsoil on the gears.
     
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  3. Jun 5, 2017 at 11:57 AM
    #3
    osidepunker

    osidepunker OsidePunker

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    I'm curious, when does Toyota recommend transmission service?

    I do my diffs every 10k because I'm so hard on them
     
  4. Jun 5, 2017 at 11:58 AM
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    1UPPER

    1UPPER New Member

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    If you look at the back of your service manual it gives you the mileage points for different services.
     
  5. Jun 5, 2017 at 11:59 AM
    #5
    14burrito

    14burrito IG @14burrito

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  6. Jun 5, 2017 at 12:02 PM
    #6
    Spvrtan

    Spvrtan [OP] Amateur fabricator

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    I'm most likely going with an ARB air locker instead of Auburn LSD -- does that change things (with Nitro gears)?
     
  7. Jun 5, 2017 at 12:03 PM
    #7
    osidepunker

    osidepunker OsidePunker

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    jeezuz man I know this. I was just wondering if I could get a quick answer to satisfy my curiosity instead of driving all the way home and digging through my manual.

    but thanks anyway :rolleyes:
     
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  8. Jun 5, 2017 at 12:11 PM
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    1UPPER

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    Sorry bro misunderstood your question. I called Toyota service and they said any Tundra 2006 to current the transmission oil change is at 100k miles. They said differential fluid change is every 30k miles.
     
  9. Jun 5, 2017 at 12:13 PM
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    1UPPER

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    I don't want to mislead you on this one. I'm not completely sure. I would suggest you call ARB and ask them what they suggest then. That way you don't void any warranties or cause excessive wear to your gears.
     
  10. Jun 5, 2017 at 12:14 PM
    #10
    osidepunker

    osidepunker OsidePunker

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    Thanks man (for reals this time lol) that's what I remember. Just wanted to verify
     
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  11. Oct 26, 2017 at 2:56 PM
    #11
    UTTundra

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    Has anyone used RAVENOL J1C1003 SAE 75W Manual Transmission Fluid - MTF-3 Full Synthetic in place of the OEM 75W transfer case oil #08885-81080? The Ravenol is supposed to be the equivalent to Toyota 08885-81081, which is supposedly the same as 08885-81080, but packaged for Euro/Asian markets according to some Tacoma and 4Runner forums. The Ravenol is $15 on Amazon, as opposed to $55 for the Toyota fluid. Amazon reviews claim it is an exact match for 2014+ Tundra transfer case fluid.
     
  12. Oct 26, 2017 at 3:12 PM
    #12
    UTTundra

    UTTundra New Member

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    Apparently there are a couple postings in Russian forums showing that 08885-81081 is actually a can of 08885-81080 with a new label slapped on for Toyota Motor Europe.

    The Ravenol application guide on their website recommends their SAE 75W Manual Transmission Fluid - MTF-3 for 2014+ 5.7L (3UR-FBE) transfer case. http://www.ravenol.de/en/oil-guide.html
     
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  13. Oct 26, 2017 at 5:58 PM
    #13
    BIGUGLY

    BIGUGLY I the SheepDog. I have the capacity for Violence.

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    Have you tried royal purple.
     
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  14. Oct 26, 2017 at 6:24 PM
    #14
    UTTundra

    UTTundra New Member

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    I have not. I know some have used the Royal Purple Synchromax in the transfer case. From what I've read, it's a better option than the 75W-90 that some people use, but still slightly different from a 75W.
     
  15. Mar 14, 2018 at 1:41 PM
    #15
    UTTundra

    UTTundra New Member

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    I did use Ravenol about 6000 miles ago. Have not noticed any difference from the OEM fluid. I know there's been a few other guys running Ravenol as well.
     
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  16. Mar 14, 2018 at 7:01 PM
    #16
    15whtrd

    15whtrd Mr. Blonde

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    What did you run in your diffs?
     
  17. Mar 14, 2018 at 7:08 PM
    #17
    UTTundra

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    I use Redline 75w85. You can usually find it online for $13-15 per quart.
     
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  18. Mar 14, 2018 at 7:14 PM
    #18
    15whtrd

    15whtrd Mr. Blonde

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    I used royal purple about 17,000 miles 75w90 in everything.
    I’m thinking of ordering that ravenol for the TC. Because now I’m worried. I went off an old thread a couple years ago when I did it.
    Figuring the 07 through 15 we’re all the same. I’m pretty sure the royal purple was probably OK in the diffs. But I’m thinking of changing them again too. I wonder how critical it is to use 75w85?
     
  19. Mar 14, 2018 at 7:25 PM
    #19
    UTTundra

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    Have you noticed anything running the Royal in the TC? I’ve heard the RP Synchromax is suitable for the TC, but still thicker than a 75w. Sounds like many dealers are still using 75w-90.
     
  20. Mar 14, 2018 at 7:33 PM
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    15whtrd

    15whtrd Mr. Blonde

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    No it seems fine engages quickly. Disengagement is quick unless I continue straight, then the 4hi flashes until I make a turn. I changed the fluids so early in the life of the truck (3k) that I honestly don’t remember how it was before. Im at 20k now.
     
  21. Mar 14, 2018 at 7:35 PM
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    UTTundra

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    I’m actually probably running 75w-90 in the front right now. I had 4.88 gears installed last week. I brought a case of Redline with to refill the diffs, but the installer only used it in the rear so that I would have enough of it to do the 500 mile drain and fill of the rear with Redline.
     
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