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75W-85 versus 75W-90 Gear Oil

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Wackyhacky, Dec 21, 2019.

  1. Dec 21, 2019 at 1:25 PM
    #1
    Wackyhacky

    Wackyhacky [OP] A Well Known Troublemaker

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    Does anyone know if using 90 presents any kind of issue in the front or rear diff? 75W-85 is what is specifically called out in the owners manual, but I just went to both Napa as well an Oreilly's and neither place said the have ever seen 85 before???
     
  2. Dec 21, 2019 at 1:27 PM
    #2
    Delta09

    Delta09 4-7, 5-8, 6-9

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  3. Dec 21, 2019 at 1:29 PM
    #3
    Wackyhacky

    Wackyhacky [OP] A Well Known Troublemaker

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    Excellent. I figured as much, but figured I would pulse the crowd to be sure. Thanks!
     
  4. Dec 21, 2019 at 1:54 PM
    #4
    jkuniverse

    jkuniverse Well-Known Member

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  5. Dec 21, 2019 at 3:02 PM
    #5
    Sold My Subaru

    Sold My Subaru 6MT AC TRD OR 1GR-FE FTMFW

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    I’m running 75w-140 everywhere, except the MT-that gets MT-90
     
  6. Dec 21, 2019 at 3:06 PM
    #6
    j_sav115

    j_sav115 Well-Known Member

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    Why 140?
     
  7. Dec 21, 2019 at 5:13 PM
    #7
    REDdawn6

    REDdawn6 Well-Known Member

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    Probably aftermarket gears
     
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  8. Dec 21, 2019 at 5:52 PM
    #8
    Sold My Subaru

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    I’m running the heavier weight in the t-case ‘cause ECGS recommends it. I run it in the boxes mainly because I exceed payload quite a bit hauling my camper in the bed and do some towing with that sumbitch in there as well.
     
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  9. Dec 21, 2019 at 6:04 PM
    #9
    j_sav115

    j_sav115 Well-Known Member

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    Gotcha. Makes sense
     
  10. Dec 21, 2019 at 6:05 PM
    #10
    j_sav115

    j_sav115 Well-Known Member

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    Getting to start all over :)
    Although I've never seen ECGS suggestions for heavier weight. Re-gear?
     
  11. Dec 21, 2019 at 6:24 PM
    #11
    Sold My Subaru

    Sold My Subaru 6MT AC TRD OR 1GR-FE FTMFW

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    Stock gears
     
  12. Dec 21, 2019 at 9:02 PM
    #12
    07 sport 4x4

    07 sport 4x4 Well-Known Member

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  13. Dec 22, 2019 at 4:22 AM
    #13
    wags

    wags Well-Known Member

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    Auto store counter help have never seen 75W-85 gear oil? That's interesting. I use 75W-85 GL-5 gear oil in my differentials as specified in owners manual. Redline products is what I use (expensive). From reading TW forums majority here use 75W-90 with no issues. Your truck your call.

    https://www.redlineoil.com/75w85-gl-5-gear-oil
     
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