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What oil to use in differential and transfer case

Discussion in '5th Gen 4Runners (2010+)' started by brennaman, Nov 25, 2021.

  1. Nov 25, 2021 at 12:29 PM
    #1
    brennaman

    brennaman [OP] New Member

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    Just bought a 2015 with 98k on the odometer. I thought I would spend the weekend replacing all the fluids, and would like a little advice from some that have done this already.

    The front and rear diff require 75W-85. The toyota dealer does not sell the oil, and at the auto parts store, they have 75W-90, 75W-95 were the 2 I think I saw, but not 75W-85. I would assume that either would be fine, but I would like to get the right thing.

    As for the transfer case, they call for straight 75W oil. The only one I could find of this was on ebay for about $75 a quart.(had a toyota lable on it) Needing 1.6 qts. I would have to buy $150 of this stuff. Is this really what you put in it? Or do you just get a multi-viscosity and call it a day.

    I tend to replace fluids on a much more frequent interval than manufacturer recommends, so whatever I put in it won't stay more than a couple of years.

    This is my first Toyota, so I do not have any experience with the maint. on them. I really want to make sure I put the right stuff in there. Thanks Phil
     
  2. Nov 25, 2021 at 1:01 PM
    #2
    canadian.bacon

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  3. Nov 25, 2021 at 1:40 PM
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    ElectroBoy

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    Forget about Bob, listen to Toyota, post #13 (courtesy of @captrussia253), 75W-90 is fine):
    https://www.4runners.com/threads/wo...ead-of-the-70-toyota-fluid.12858/#post-222929
     
    Last edited: Nov 25, 2021
    captrussia253 likes this.
  4. Nov 25, 2021 at 1:43 PM
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    MAXIM

    MAXIM New Member

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    I've 75w-85 Redline Oil in both diffs and OEM 75w in transfer case but you can use same 75w85 oil in t/c if don't have access to rare OEM can of gold.
     
    captrussia253 likes this.
  5. Nov 25, 2021 at 1:47 PM
    #5
    MAXIM

    MAXIM New Member

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  6. Nov 25, 2021 at 2:08 PM
    #6
    captrussia253

    captrussia253 New Member

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    I used this in the TC but will likely use a cheaper 75w90 per Toyota. I change diff and TC fluid every 2-3 years. Cheap fluid and peace of mind.
     
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  7. Nov 25, 2021 at 2:12 PM
    #7
    brennaman

    brennaman [OP] New Member

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    Wow, I just read all of those threads. I should have known that asking about oil is right up there with politics at Thanksgiving dinner. I appreciate all your inputs. The one 75W-85 that walmart has is $38 a quart. Jeez, half of what the toyota stuff is, but since I will be taking it back out in a couple of years, i think I will go with the majority and get 75W-90 for both diffs and transfer. thanks all
     
    Toy4X4, ElectroBoy and captrussia253 like this.
  8. Nov 25, 2021 at 2:15 PM
    #8
    captrussia253

    captrussia253 New Member

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    Good call. No need to pay for the expensive stuff.
     
  9. Nov 25, 2021 at 2:26 PM
    #9
    whippersnapper02

    whippersnapper02 New Member

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    I've been using off the shelf equivalent for years without issues.
     
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  10. Nov 25, 2021 at 6:40 PM
    #10
    Trekker

    Trekker Regular Member

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    On diff and TC worry more about changing the fluid and getting what you can afford, rather than what brand you use. Changing your diff and TC fluid on time makes more of a difference than what brand you use (as long as you get the correct weight and GL)
     
    Slopemaster and captrussia253 like this.
  11. Nov 25, 2021 at 7:13 PM
    #11
    Slopemaster

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  12. Nov 25, 2021 at 7:53 PM
    #12
    Jynarik

    Jynarik I like boobies

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    Royal purple synchromax meets Toyota specs. What I use.
     

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