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Rear Differential Gear Oil Change

Discussion in '2nd Gen. Tacomas (2005-2015)' started by GrnXnham, Oct 5, 2019.

  1. Oct 5, 2019 at 6:43 PM
    #1
    GrnXnham

    GrnXnham [OP] Member

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    Tacoma, WA
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    2015 PreRunner Auto 4-Banger
    So I changed my rear diff fluid on my 2015 PreRunner 4CYL today. 67,000 miles. I don't ever tow anything but I always carry 600-800lbs of gear in the back.

    The old gear oil looked like new. It was still a very golden color with very little debris on the magnet.

    I used SuperTech 75W-90 Synthetic GL5 as a replacement.

    Just letting everyone know that you are probably okay at waiting until longer than 67K to replace this oil on this model based on how clean my oil looked, unless you are driving under severe conditions (like towing)

    The manual just says to check it--not change it, but once you have it open why not go ahead and change it?

    I just changed it because it was cheap and easy to do.
     
    Rick's 2012, TOMB and Tacos4ever15 like this.
  2. Oct 5, 2019 at 7:02 PM
    #2
    winkel

    winkel Well-Known Member

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    Corydon, IN
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    Rock Sliders, Mild Lift, Relentless Fabrication Taligate Liner
    Pretty much the same story on mine the last time I changed it. I only did it because we recently moved and I towed a 16' trailer that was loaded pretty heavy, through the hills of southern Indiana. I was running it pretty hard on those two trips.
     
  3. Oct 5, 2019 at 7:20 PM
    #3
    GrnXnham

    GrnXnham [OP] Member

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    The thing is that I have found you can't generalize when it comes to mileage and changing this oil. I have changed the rear diff gear oil on several other vehicles over the years and found it to be really nasty and black with tons of crap stuck to the magnet at similar mileage.
     
  4. Oct 5, 2019 at 7:25 PM
    #4
    Fury

    Fury Well-Known Member

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    I change all 3 of my gear lubes every 3 years regardless of mileage. As stated - it is easy and cheap insurance. I also use synthetic gearlube. Just an FYI - both times I have done it, the transfer and rear diff looked clean but the front diff looked darker.
     
  5. Oct 5, 2019 at 7:25 PM
    #5
    StillNoPickles

    StillNoPickles Well-Known Member

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  6. Oct 6, 2019 at 6:40 AM
    #6
    badger

    badger Well-Known Member

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    The problem is that gear oil does not get black from carbon like engine oil. It can look fine and be sheared to hell. Unless a gear or bearing is eating itself, or you overheated the oil, it will LOOK good after many miles. The differential in the gen 2 is not exactly over sized. If you want the thing to last, change it at 30,000. It's cheap and easy.
     
    Chocobot likes this.
  7. Oct 7, 2019 at 6:57 PM
    #7
    Chocobot

    Chocobot Member

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    I'm about to do this tommorow. I have not done it for about 60,000 miles. I'm just hoping i didn't wait to long and everything goes smoothly.
     

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