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Rear Differential Leaking on my 3rd gen 2018 Tundra same as my 2017 Tacoma

Discussion in '3rd Gen Tundras (2014+)' started by OR18TRD, Jun 28, 2019.

?

Year/leak/no leak

  1. 2007-2013 leak

    0 vote(s)
    0.0%
  2. 2007-2013 no leak

    16 vote(s)
    11.3%
  3. 2014/15 leak

    8 vote(s)
    5.7%
  4. 2014/15 no leak

    15 vote(s)
    10.6%
  5. 2016/17 leak

    18 vote(s)
    12.8%
  6. 2016/17 no leak

    18 vote(s)
    12.8%
  7. 2018 leak

    34 vote(s)
    24.1%
  8. 2018 no leak

    13 vote(s)
    9.2%
  9. 2019 leak

    6 vote(s)
    4.3%
  10. 2019 no leak

    13 vote(s)
    9.2%
  11. Leaked and was fixed

    2 vote(s)
    1.4%
  12. Leaking was not fixed told to keep an eye on it.

    7 vote(s)
    5.0%
  13. Leaked and was retorqued

    1 vote(s)
    0.7%
  14. Miles when leak started 0-2500

    1 vote(s)
    0.7%
  15. 2501-5000

    1 vote(s)
    0.7%
  16. 5001-7500

    5 vote(s)
    3.5%
  17. 7501-10000

    8 vote(s)
    5.7%
  18. 10000-15000

    10 vote(s)
    7.1%
  19. 15000+

    10 vote(s)
    7.1%
  20. 2020 leak

    0 vote(s)
    0.0%
Multiple votes are allowed.
  1. Jul 28, 2019 at 5:59 PM
    #301
    SiberianTundra

    SiberianTundra I heard Unicorns get horrible MPG

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    BTW I hear good things about https://www.lubelocker.com/
    I am not partial and never used them. But Jeep guys love them.

    Also here is an OLD thread about Jeep guys suffering similar issues of sweat and seep front and rear diff
    https://www.jk-forum.com/forums/stock-jk-tech-12/differential-seepage-sweating-39446/page2/

    Audi guys are Sweating rear diff
    https://www.audizine.com/forum/showthread.php/312887-Sweating-read-diff

    Ford Raptor guys are seeping rear diff
    https://www.fordraptorforum.com/threads/rear-diff-leaking.62360/
     
  2. Jul 28, 2019 at 8:02 PM
    #302
    Moon Puppy

    Moon Puppy New Member

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    Did i read that right, one of the Raptor guys talking about using JB Weld to fix a broken bolt on the diff cover?
     
    SiberianTundra likes this.
  3. Jul 29, 2019 at 3:28 AM
    #303
    ZPMAN

    ZPMAN 2nd place is the 1st looser

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    I can clearly see your an expert mechanic and all dealerships get big smiles when they see you.
     
  4. Jul 29, 2019 at 10:08 AM
    #304
    SiberianTundra

    SiberianTundra I heard Unicorns get horrible MPG

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    Yeap :D It is insane. Not sure why. You can mill a new bolt easy
     
  5. Jul 29, 2019 at 11:40 AM
    #305
    Moon Puppy

    Moon Puppy New Member

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    Maybe YOU can, I'd just order one..:spending:
     
    SiberianTundra likes this.
  6. Jul 29, 2019 at 11:45 AM
    #306
    SiberianTundra

    SiberianTundra I heard Unicorns get horrible MPG

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    that works as well
    either way no need to weld rear diff
     
  7. Aug 1, 2019 at 5:26 PM
    #307
    Dano8855

    Dano8855 New Member

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    Just got back from the dealership with my 2018 limited CM with 14k miles. They replaced the rear differential gasket and with fresh gear oil. The service rep said he seen several newer tundras with the same issue and thinks that Toyota is working a TSB fix.
     
    Last edited: Aug 1, 2019
    Shaggie13, jtwags and Winning8 like this.
  8. Aug 2, 2019 at 1:37 PM
    #308
    SiberianTundra

    SiberianTundra I heard Unicorns get horrible MPG

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    Camper shell, LED lighting VLEDs, Front Camera, Pro Comp wheels. Trd HID LED headlights. ESP storage rear seats.
    Here is mine
    Let me know if anyone see any seeping

    8000 miles 2018 2wd 4.6 crewmax
     
    Watt maker and OR18TRD [OP] like this.
  9. Aug 2, 2019 at 1:43 PM
    #309
    OR18TRD

    OR18TRD [OP] Pândâ Crëw

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    Suspension: front- Bilsein 6112 set at 1.9”; Rear- bilstein 5160 with maxtrac 1” shackel. Wheels: Method MR308 roost wheels 18x9” +18 offset. Tires: 275/70/18 Goodyear wrangler DuraTrac’s Removed front mudflaps and moved front wheel well liner forward. Bakflip MX4 Tonneau cover Line-x premium bed liner aFe CAI Rear differential breather moved behind taillight Debadged Windows tinted 20% ESP locking long box rear seat storage OEM all weather mats 6 3/4” antenna Coverking leather rear seat cover
    Looks ok to me. :thumbsup:
     
  10. Aug 2, 2019 at 1:51 PM
    #310
    OR18TRD

    OR18TRD [OP] Pândâ Crëw

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    PDX
    Vehicle:
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    Suspension: front- Bilsein 6112 set at 1.9”; Rear- bilstein 5160 with maxtrac 1” shackel. Wheels: Method MR308 roost wheels 18x9” +18 offset. Tires: 275/70/18 Goodyear wrangler DuraTrac’s Removed front mudflaps and moved front wheel well liner forward. Bakflip MX4 Tonneau cover Line-x premium bed liner aFe CAI Rear differential breather moved behind taillight Debadged Windows tinted 20% ESP locking long box rear seat storage OEM all weather mats 6 3/4” antenna Coverking leather rear seat cover
    I wish my dealer would have just fixed mine. I’m in the hurry up and wait for it to leak again cycle. The re torque wait... so dumb. It’s under warranty just fix it right and let me be on my way. What a waist of a loyal customers time. I hope they TSB or recall them.
    I just wanted a Toyota truck that I could enjoy for more than 2 years and 10k miles before it ended up having major repairs done.

    2021. :notsure:
     
    Boosted4runner likes this.
  11. Aug 2, 2019 at 2:23 PM
    #311
    ZPMAN

    ZPMAN 2nd place is the 1st looser

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    At the rate yours is weeping you should be good to go for 20+ years.:poking:
     
    Watt maker and OR18TRD [OP] like this.
  12. Aug 2, 2019 at 3:22 PM
    #312
    OR18TRD

    OR18TRD [OP] Pândâ Crëw

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    Suspension: front- Bilsein 6112 set at 1.9”; Rear- bilstein 5160 with maxtrac 1” shackel. Wheels: Method MR308 roost wheels 18x9” +18 offset. Tires: 275/70/18 Goodyear wrangler DuraTrac’s Removed front mudflaps and moved front wheel well liner forward. Bakflip MX4 Tonneau cover Line-x premium bed liner aFe CAI Rear differential breather moved behind taillight Debadged Windows tinted 20% ESP locking long box rear seat storage OEM all weather mats 6 3/4” antenna Coverking leather rear seat cover
    Want to buy it from me and let me know?
    :boink:
     
  13. Aug 2, 2019 at 3:54 PM
    #313
    ZPMAN

    ZPMAN 2nd place is the 1st looser

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    Nope have one and keeping one eye open for a Rivian possibly in the future.
     
    OR18TRD [OP] likes this.
  14. Aug 2, 2019 at 3:57 PM
    #314
    OR18TRD

    OR18TRD [OP] Pândâ Crëw

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    Vehicle:
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    Suspension: front- Bilsein 6112 set at 1.9”; Rear- bilstein 5160 with maxtrac 1” shackel. Wheels: Method MR308 roost wheels 18x9” +18 offset. Tires: 275/70/18 Goodyear wrangler DuraTrac’s Removed front mudflaps and moved front wheel well liner forward. Bakflip MX4 Tonneau cover Line-x premium bed liner aFe CAI Rear differential breather moved behind taillight Debadged Windows tinted 20% ESP locking long box rear seat storage OEM all weather mats 6 3/4” antenna Coverking leather rear seat cover
    I tried... :D
     
  15. Aug 2, 2019 at 6:06 PM
    #315
    mojojo

    mojojo New Member

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    I feel your pain. My 2018 is the first new vehicle I've ever purchased for myself.
    ...my previous daily driver was a 96 Volvo 850 turbo - that I've kept, with 300k miles. Of course with a car like that, I performed all of the repairs from control arms to burned valve.

    I thought buying a new... Toyota... Would put me in the clear for a looong time.

    I've been nothing but disappointed with every experience I've had with the local dealer network, and Toyota corporate's own inability to diagnose an issue that they attempted to fix on three occasions.

    Needless to say, my wife's new car won't be a Toyota.

    Best of luck to you.
     
    jtwags and OR18TRD [OP] like this.
  16. Aug 2, 2019 at 6:25 PM
    #316
    OR18TRD

    OR18TRD [OP] Pândâ Crëw

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    Suspension: front- Bilsein 6112 set at 1.9”; Rear- bilstein 5160 with maxtrac 1” shackel. Wheels: Method MR308 roost wheels 18x9” +18 offset. Tires: 275/70/18 Goodyear wrangler DuraTrac’s Removed front mudflaps and moved front wheel well liner forward. Bakflip MX4 Tonneau cover Line-x premium bed liner aFe CAI Rear differential breather moved behind taillight Debadged Windows tinted 20% ESP locking long box rear seat storage OEM all weather mats 6 3/4” antenna Coverking leather rear seat cover
    Sorry you’ve had issues as well. Check into the lemon law in your state.
     
  17. Aug 9, 2019 at 12:47 PM
    #317
    Steve89gt

    Steve89gt New Member

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    Crawled under mine today, looking for leaks from two points: cam towers and diff. Cam towers are all good, rear diff not so much. Super disappointing...2018 with 13k miles
     
    OR18TRD [OP] likes this.
  18. Aug 9, 2019 at 2:13 PM
    #318
    av8tor

    av8tor New Member

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    2016 Platinum here with ~ 20,600 miles, leakage has been found... Gonna clean and confirm torque to see if it starts again.
     
  19. Aug 9, 2019 at 2:56 PM
    #319
    Shaggie13

    Shaggie13 New Member

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    Had an appointment for oil change at dealership and happened to check this thread before I went and noticed some leakage. Had them look and it and they did the same thing. Replaced the rear differential gasket all under warranty. I have a 2017 TRD Pro with 20K miles.
     
  20. Aug 10, 2019 at 8:54 AM
    #320
    av8tor

    av8tor New Member

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    I wonder if this has anything to do with using the S shift mode in that it is creating higher temps/pressures in the rear end instead of using D mode? Maybe the breather needs to be different to compensate for this...

    I’ve been using S shift mode more often over the last few months (because I like hearing my BAM exhaust :headbang:) and just noticed the seepage after reading this. It wasn’t there prior to the install and I rarely used S shift mode prior.

    Any seepage happening from ya’ll that normally uses D shift mode?

    Also, is there a performance breather that can take the place of the factory one in the diff? May try this after cleaning the diff to see if it helps. No engineer here, just trying to think like one. Unless someone knows my thinking is off.
     
    Last edited: Aug 10, 2019
  21. Aug 10, 2019 at 10:15 AM
    #321
    Shaggie13

    Shaggie13 New Member

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    I never used the S shift mode. The way the just replaced it at my dealership with no fuss makes me think this is a known item that they are seeing a lot more now.
     
    jtwags and phabej like this.
  22. Aug 10, 2019 at 10:39 AM
    #322
    15whtrd

    15whtrd Mr. Blonde

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    Your rear end isn’t spinning any differently or at a different RPM using S mode. Only difference I could see would maybe be deceleration. They do make better breathers out there like ARB. I relocated my stock breather up behind my drivers tail light. I also use S mode quite often and my rear end seems to be dry. About 29,000 miles. But I also off road and I’m in the dust somewhat often. Then I hose down the bottom of the truck. So I just might not be noticing anything.
     
    GNTundra likes this.
  23. Aug 10, 2019 at 10:44 AM
    #323
    av8tor

    av8tor New Member

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    My theory debunked maybe. No engineer by any means. Lol
     
  24. Aug 10, 2019 at 10:46 AM
    #324
    av8tor

    av8tor New Member

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    I know that the rpm’s might be held higher for longer and using it to decelerate I was thinking these could maybe create higher pressures to cause it. Theory most likely debunked. No engineer by any means. Lol
     
    15whtrd likes this.
  25. Aug 10, 2019 at 11:30 AM
    #325
    15whtrd

    15whtrd Mr. Blonde

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    TRD Pro suspension, +2 Coachbuilder shackles, 2015 TRD Pro headlights, 20% ceramic tinted windows, charcoal filter delete, aFe drop in pro s dry air filter, TRD airflow accelerator, TRD oil fill cap, TRD 18 psi radiator cap, BDX Bullydog tuner, Weathertech floor mats front and rear, rear seat fold down mod, Tyger soft tonneau cover, Linex with uv protection, TRD swaybar, TRD center caps, TRD Pro grille insert, aluminum oil filter canister, Real truck tailgate seal, Pop-n-lock tailgate lock actuator, rear diff breather relocate, RCI front skid plate.
    Anything is possible. I’ve come to realize that the stock breather does hold a bit of pressure before releasing. I’m sure it’s possible with the newer oils being synthetic that it could find its way past the seals. Maybe that slight amount of pressure could expose a poorly sealed rear end.
     
  26. Aug 10, 2019 at 2:08 PM
    #326
    Boosted4runner

    Boosted4runner Join the NRA please.

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    Duuuuuude! You have some bad luck!
    I’m sorry, that’s not how it’s supposed to be when buying a Yota :(
     
    Zoomworms and OR18TRD [OP] like this.
  27. Aug 10, 2019 at 3:10 PM
    #327
    OR18TRD

    OR18TRD [OP] Pândâ Crëw

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    Suspension: front- Bilsein 6112 set at 1.9”; Rear- bilstein 5160 with maxtrac 1” shackel. Wheels: Method MR308 roost wheels 18x9” +18 offset. Tires: 275/70/18 Goodyear wrangler DuraTrac’s Removed front mudflaps and moved front wheel well liner forward. Bakflip MX4 Tonneau cover Line-x premium bed liner aFe CAI Rear differential breather moved behind taillight Debadged Windows tinted 20% ESP locking long box rear seat storage OEM all weather mats 6 3/4” antenna Coverking leather rear seat cover
    What do you think about an open breather?
     
    Boosted4runner and 15whtrd like this.
  28. Aug 10, 2019 at 3:12 PM
    #328
    OR18TRD

    OR18TRD [OP] Pândâ Crëw

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    Suspension: front- Bilsein 6112 set at 1.9”; Rear- bilstein 5160 with maxtrac 1” shackel. Wheels: Method MR308 roost wheels 18x9” +18 offset. Tires: 275/70/18 Goodyear wrangler DuraTrac’s Removed front mudflaps and moved front wheel well liner forward. Bakflip MX4 Tonneau cover Line-x premium bed liner aFe CAI Rear differential breather moved behind taillight Debadged Windows tinted 20% ESP locking long box rear seat storage OEM all weather mats 6 3/4” antenna Coverking leather rear seat cover
    Thanks. Agreed.
     
    Boosted4runner likes this.
  29. Aug 10, 2019 at 3:58 PM
    #329
    15whtrd

    15whtrd Mr. Blonde

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    I think that’s what the ARB is. Flows in both directions. That’s what I would like to do
     
    OR18TRD [OP] likes this.
  30. Aug 10, 2019 at 5:16 PM
    #330
    phabej

    phabej New Member

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    Lol reminds me of how transmedic in Gresham does things, but those guys (Corey) warranty their work.
     
    OR18TRD [OP] likes this.

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