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Rear differential fluid

Discussion in '2nd Gen. Tacomas (2005-2015)' started by bangertacoma, Dec 24, 2016.

  1. Dec 24, 2016 at 5:28 AM
    #1
    bangertacoma

    bangertacoma [OP] Member

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    Hi,
    The manual says I suppose to use "Toyota Genuine Differential Fluid gear oil LT 75w85 GL-5 or equivalent"

    Can anyone recommend equivalent differential fluid please for 2015 pre-runner RWD 4cyl double cab?

    Thank you all!
     
  2. Dec 24, 2016 at 5:32 AM
    #2
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    A few OE parts from fancy trucks
    Go to the parts store.

    Pick a name brand on sale. (Mobil 1, Valvoline, etc.)

    Don't waste money on a boutique lubricant. (amsoil, Redline, Royal Purple, etc.)
     
  3. Dec 24, 2016 at 5:41 AM
    #3
    bangertacoma

    bangertacoma [OP] Member

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    Hi,
    I like Mobile 1 too, but when the mobil 1 website does not recommend their gear oil for Tacoma when you select the vehicle by year and model on mobil 1 web site :(
     
  4. Dec 24, 2016 at 5:50 AM
    #4
    bangertacoma

    bangertacoma [OP] Member

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    does it matter if I put limited slip oil in non-limited-slip differential? :infantry:
     
  5. Dec 24, 2016 at 5:57 AM
    #5
    hanrock

    hanrock Well-Known Member

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    Just make sure it has the GL-5 designation on it, the brand is your preference.
     
  6. Dec 24, 2016 at 7:01 AM
    #6
    badger

    badger Well-Known Member

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    It won't matter. They almost all say LS compatible, and most aren't anyway. The two most important items are GL-5 and full synthetic. If you use your truck hard for hauling or towing, then I would use Amsoil Severe gear, Or Redline 75/110 GL-5. The Tacoma has a 4 cyclinder ring and pinion. It generates a ton of heat in a 4.0 liter truck. The synthetic oil helps keep that temp down. On a heavily used truck, you will need a higher viscosity to handle the additional heat. If your use is normal, then any good synthetic, like Mobil 1 is fine.
     
  7. Dec 24, 2016 at 7:07 AM
    #7
    bangertacoma

    bangertacoma [OP] Member

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    Thank you! i drove a lot..already 90k miles in 2 years! it's 2.7 L pr-runner RWD. Per manual, suppose to change rear differential every 15k miles under heavy use! i don't tow but 50% of time the bed is loaded ! so, i think Mobil 1 75w90 will be economical and meet the need if i change every 15k miles per recommendation. :benchpress:
     
  8. Dec 24, 2016 at 7:07 AM
    #8
    spiralout462

    spiralout462 Well-Known Member

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  9. Dec 24, 2016 at 7:12 AM
    #9
    bangertacoma

    bangertacoma [OP] Member

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  10. Dec 24, 2016 at 7:41 AM
    #10
    badger

    badger Well-Known Member

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    I've done my own tests using heat build up as the measure. First I used an infrared thermometer, then I installed a temperature probe in the rear diff. Amsoil and Redline were the best. The biggest difference was between synthetic and dino oil. I didn't realize the OP was running a 2.7 though. The load on his diff will be much more manageable because it is handling less HP. If you have an IR thermometer, try pulling a good hill on a hot day, and then quickly pull over and measure the diff temp. If you are over 220 degrees, I would consider a premium oil.
     
    shakerhood likes this.
  11. Dec 24, 2016 at 9:25 AM
    #11
    Norton

    Norton Senior Member

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  12. Dec 24, 2016 at 9:36 AM
    #12
    Shwaa

    Shwaa Well-Known Member

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    You're the best @Clearwater Bill . You're always trying to save ppl money, make them think twice about mods they don't really need, going against the grain constantly here. You're like a Christmas miracle
     
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  13. Dec 24, 2016 at 9:57 AM
    #13
    bangertacoma

    bangertacoma [OP] Member

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    is there going to be significant MPG / fuel efficiency different between 75w85 vs 75w90?? considering i drive about 40k miles a year :) :mudding:
     
  14. Dec 24, 2016 at 9:59 AM
    #14
    badger

    badger Well-Known Member

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    No. I see a difference using 75/140, especially in winter, but you won't see anything between 75/85 and 75/90
     
  15. Dec 24, 2016 at 11:04 AM
    #15
    Clearwater Bill

    Clearwater Bill Sometimes when I close my eyes, I can't see.

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    :eek: :oops:
     
  16. Aug 29, 2020 at 6:20 PM
    #16
    pdx_climber

    pdx_climber Member

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    A little revitalization on this thread... looking up my 07 Tacoma SR5 4x4 V6 the vin search says I have LS - so yippy I guess. Dont think it was standard on the SR5. Anyway, I'm going to swap all my fluids and picking an oil for diffs and xfer case. I have 190K on it - I did these back at 130K. Maybe I did them once since but can't remember. Anyway always had them done by a shop so they used Toyota fluids but I was planning on using Red Line.

    Then (while writing this post) I switched to Amsol FGRQT (long life). Why? Because at 'member pricing' if you order 8 (to get free shipping) its $13.35/qt including the $10 member fee.
    Note Severe Gear is $15.15 if you wanna go that route. Best I see on Mobil 1 57905 is about the same as Red Line and maybe saves $1/qt ($50/gal but no membership fees - qt's are higher)

    Just thought I'd share my findings for those in need.
     
  17. Aug 29, 2020 at 7:15 PM
    #17
    centurion

    centurion Well-Known Member

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    if you have a LS your supposed to use regular Dino oil with an LSD friction enhancer, also there should be a sticker on your differential that says LSD, or you could do a brake burn and see if you lay down twin strips.I was under the impression only the sport models had LSD's but nothing would surprise me ;)
     
  18. Aug 29, 2020 at 7:21 PM
    #18
    ROAD DOG

    ROAD DOG Well-Known Member

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    iv used mobil 1 .............. redline either without failure

    redline has the latest selection tho i have to order
    rather than buy off shelf

    check & fill once a year

    the ' LS ' limited slip factor has more to do with rear diffs with clutch packs
     
  19. Sep 1, 2020 at 10:34 AM
    #19
    pdx_climber

    pdx_climber Member

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    Well, the VIN search says it was added but I just had it up in the air and them wheels counter-rotate.
     
    KTM753 likes this.
  20. Sep 1, 2020 at 7:05 PM
    #20
    dawgn86

    dawgn86 Well-Known Member

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