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

LEAKING REAR END :(

Discussion in '3rd Gen. Tacomas (2016+)' started by tacocart762, Jun 9, 2020.

  1. Jun 9, 2020 at 7:35 AM
    #1
    tacocart762

    tacocart762 [OP] Well-Known Member

    Joined:
    Mar 15, 2020
    Member:
    #322179
    Messages:
    365
    Gender:
    Male
    First Name:
    desert55gr
    Santa Clarita Valley
    Vehicle:
    2017 Tacoma TRD Offroad Dbl Cab Long Box
    1.5in Bilstein 6112 Front,1in Alcan Leaf Rear with Bill 5100's. Battle Armor side step,bull bar, and rear step.
    I am casting this out there and seeing what bites I get. Helpful responses are welcomed.

    I have a feeling my rear diff is leaking. However the 2017 TRD OR is not covered in the leaking rear diff recall. I changed out my rear diff fluid to Redline 75W85 GL5 about two months ago. Prior to doing this I did not notice any leaking however I might not have been looking hard enough because I was concentrating on the engine leaking oil. The oil leak has since been fix by the dealership on their dime. Over the last month I had noticed a little weeping of diff oil around the seal facing the front of the truck. I figured not too big a deal as there were no droplets or spots on the driveway. I finally got to a point I where I crawled underneath to clean/degrease the diff. While I was under there with a flashlight I looked around and noticed oil sprayed all over the rear end in what looks like an arch. Almost like oil is being flung from the driveshaft in a circle all over the back of the truck. Oil was on the fuel tank, wheels, brakes, spare tire, rear bumper, axle, and the underside of the bed. WTF I thought I am having nothing but issues with this vehicle! I then cleaned everything really well last night. I got under there for an hour and a half and scrubbed all the oil off in hopes of being able to find out where the fluid was coming from or hoping that it is no longer an issue (what I was really hoping for!!). No dice!! I got into work this morning and there is fresh oil flung all over again. Looks even worse then before. I snapped some pics. Any ideas or can you all confirm this is a leaking rear differential seal?
    pumpkinbroke1 (2).jpg pumpkinbroke2 (2).jpg pumpkinbroke3 (2).jpg pumpkinbroke4 (2).jpg pumpkinbroke5 (2).jpg
     
  2. Jun 9, 2020 at 7:51 AM
    #2
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    20,608
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    There is a recent TSB from Toyota that clarifies their classification of what a leak is versus a weep. You might want to search that out, just for the correct ammo to take to the dealer.

    Also, if you can find some old school spray on deodorant. Something nice and chalky. It will help you identify the source. If I was to guess, this is not the classic diff leak / weep, but the front pinion seal.
     
    synaps3, shakerhood, BSFord and 2 others like this.
  3. Jun 9, 2020 at 7:52 AM
    #3
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    20,608
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    Attached is that weep / leak TSB.
     

    Attached Files:

  4. Jun 9, 2020 at 8:19 AM
    #4
    jmneill

    jmneill Well-Known Member

    Joined:
    Jul 28, 2018
    Member:
    #260876
    Messages:
    1,686
    Gender:
    Male
    Dixie
    Vehicle:
    2018 Tacoma Sport ACC CB Inferno
    X2
     
    BSFord, tacocart762 [OP] and tonered like this.
  5. Jun 9, 2020 at 8:25 AM
    #5
    Ronzio

    Ronzio Well-Known Member

    Joined:
    Feb 20, 2018
    Member:
    #245114
    Messages:
    2,696
    Gender:
    Male
    Pennsylvania
    Vehicle:
    17 DCSB TRDOR
    If there is no oil on the ground...it’s not a leak.
     
  6. Jun 9, 2020 at 8:27 AM
    #6
    tacocart762

    tacocart762 [OP] Well-Known Member

    Joined:
    Mar 15, 2020
    Member:
    #322179
    Messages:
    365
    Gender:
    Male
    First Name:
    desert55gr
    Santa Clarita Valley
    Vehicle:
    2017 Tacoma TRD Offroad Dbl Cab Long Box
    1.5in Bilstein 6112 Front,1in Alcan Leaf Rear with Bill 5100's. Battle Armor side step,bull bar, and rear step.
    Good stuff thank you for getting back to me! I had also considered the front pinion as well. I already have an appointment with Frontier Toyota in Valencia, CA on Friday. The who helped me with my engine oil leak is also helping me with this issue so I feel confident he will get this repair approved under warranty. I will try and find the most current recall info from Toyota. As far as I can see the recall does not include my vehicle.
     
    tonered likes this.
  7. Jun 9, 2020 at 8:30 AM
    #7
    tacocart762

    tacocart762 [OP] Well-Known Member

    Joined:
    Mar 15, 2020
    Member:
    #322179
    Messages:
    365
    Gender:
    Male
    First Name:
    desert55gr
    Santa Clarita Valley
    Vehicle:
    2017 Tacoma TRD Offroad Dbl Cab Long Box
    1.5in Bilstein 6112 Front,1in Alcan Leaf Rear with Bill 5100's. Battle Armor side step,bull bar, and rear step.
    This is a good one! SO it is a seeping situation. No droplets have formed. I will still show up to the appointment on Friday and see what Toyota says. The service tech who has helped me in the past usually hooks it up.
     
    tonered likes this.
  8. Jun 9, 2020 at 8:31 AM
    #8
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    20,608
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    You're welcome.

    The diff seal TSB had an oddly specific range. Mine has had a weep since new. I have never bothered with it.

    You can find all TSBs for you Taco with the info in my signature.
     
    JaCado and tacocart762 [OP] like this.
  9. Jun 9, 2020 at 8:33 AM
    #9
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    20,608
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    Good luck! Swapping that seal should be a piece of cake with a shop lift and some ugga duggas.
     
    tacocart762 [OP] likes this.
  10. Jun 9, 2020 at 8:33 AM
    #10
    tacocart762

    tacocart762 [OP] Well-Known Member

    Joined:
    Mar 15, 2020
    Member:
    #322179
    Messages:
    365
    Gender:
    Male
    First Name:
    desert55gr
    Santa Clarita Valley
    Vehicle:
    2017 Tacoma TRD Offroad Dbl Cab Long Box
    1.5in Bilstein 6112 Front,1in Alcan Leaf Rear with Bill 5100's. Battle Armor side step,bull bar, and rear step.
     
    tonered likes this.
  11. Jun 9, 2020 at 8:34 AM
    #11
    tonered

    tonered tacorider

    Joined:
    Sep 25, 2017
    Member:
    #231055
    Messages:
    20,608
    Gender:
    Male
    First Name:
    tony
    Lynnwood, WA
    No problem at all!

    :cheers:
     
    tacocart762 [OP] likes this.
  12. Jun 9, 2020 at 8:36 AM
    #12
    Synergy001

    Synergy001 IG: @pnwx.taco

    Joined:
    Dec 10, 2015
    Member:
    #171908
    Messages:
    1,763
    Gender:
    Male
    PDX
    Vehicle:
    00 ACLB -Daily, 16 DCSB -Adventure Rig
    Definitely looks like the pinion seal. I had the same issue on my truck but worse.
     
    tonered and tacocart762 [OP] like this.
  13. Jun 9, 2020 at 8:41 AM
    #13
    Lawfarin

    Lawfarin Well-Known Member

    Joined:
    Oct 25, 2015
    Member:
    #167659
    Messages:
    6,751
    Gender:
    Male
    First Name:
    Larry
    NY
    Vehicle:
    2017 Tacoma OR DCSB 4x4
    There’s a weep around the diff or someone wiped it, but also looks like something is hitting your driveshaft and spraying all over. Maybe someone just hit it with some lube or something. I don’t see any leaks around that area
     
    tonered and tacocart762 [OP] like this.
  14. Jun 9, 2020 at 8:47 AM
    #14
    Skydvrr

    Skydvrr IG: @kalopsianick

    Joined:
    Sep 13, 2017
    Member:
    #229889
    Messages:
    9,179
    Gender:
    Male
    First Name:
    Nick
    Gilbert, AZ
    Vehicle:
    Black '17 OR
    Taco Bell?
     
    tonered likes this.
  15. Jun 9, 2020 at 8:47 AM
    #15
    tacocart762

    tacocart762 [OP] Well-Known Member

    Joined:
    Mar 15, 2020
    Member:
    #322179
    Messages:
    365
    Gender:
    Male
    First Name:
    desert55gr
    Santa Clarita Valley
    Vehicle:
    2017 Tacoma TRD Offroad Dbl Cab Long Box
    1.5in Bilstein 6112 Front,1in Alcan Leaf Rear with Bill 5100's. Battle Armor side step,bull bar, and rear step.
    It does look like the driveshaft is flinging liquid all over in a circular pattern. So might very well be the front pinion as others have mentioned. I did wipe everything down last night and after a 30 mile drive to work it looks like it does now in the pics I added to the original thread. No one would have put any lube under there and the degreaser I used I made sure to thoroughly wipe it up.
     
    tonered likes this.
  16. Jun 9, 2020 at 8:48 AM
    #16
    tacocart762

    tacocart762 [OP] Well-Known Member

    Joined:
    Mar 15, 2020
    Member:
    #322179
    Messages:
    365
    Gender:
    Male
    First Name:
    desert55gr
    Santa Clarita Valley
    Vehicle:
    2017 Tacoma TRD Offroad Dbl Cab Long Box
    1.5in Bilstein 6112 Front,1in Alcan Leaf Rear with Bill 5100's. Battle Armor side step,bull bar, and rear step.
    I can not anymore heart disease at 34 years old really put a wrench in my life plans.
     
    MikeyD.25, tonered and Skydvrr like this.
  17. Jun 9, 2020 at 9:00 AM
    #17
    Skydvrr

    Skydvrr IG: @kalopsianick

    Joined:
    Sep 13, 2017
    Member:
    #229889
    Messages:
    9,179
    Gender:
    Male
    First Name:
    Nick
    Gilbert, AZ
    Vehicle:
    Black '17 OR

    Sorry I was thinking a different rear end.
     
    95tojo, tacocart762 [OP] and tonered like this.
  18. Jun 9, 2020 at 10:46 AM
    #18
    Masterofnone

    Masterofnone 140.85

    Joined:
    Jan 14, 2017
    Member:
    #207536
    Messages:
    1,649
    Gender:
    Male
    First Name:
    Bobby
    Kansas
    Vehicle:
    2017 TRD Sport AC MT
    What about the u-joint? I'd check that first.
     
    tacocart762 [OP] likes this.
  19. Jun 9, 2020 at 11:58 AM
    #19
    Pilsner

    Pilsner Well-Known Member

    Joined:
    Dec 30, 2018
    Member:
    #277424
    Messages:
    1,039
    Gender:
    Male
    Vehicle:
    18 TRDOR
    255/85r16 ST Maxx 6112/5160 w/ Dakar RCI armor, sliders, and rear bumper CBI hidden winch mount w/ Smity 20k

    Me too. That almost looks like the cause to me and why it is flung all over.
     
    tacocart762 [OP] likes this.
  20. Jun 9, 2020 at 12:17 PM
    #20
    OverlandExpress

    OverlandExpress Well-Known Member

    Joined:
    May 24, 2020
    Member:
    #329187
    Messages:
    399
    NE Ohio
    Vehicle:
    2020 Taco TRD PRO
    off base but check the diff vent tube.
    Keep tabs on the level in the diff as well.
     
    tacocart762 [OP] likes this.

Products Discussed in

To Top