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Differential & Transfer case Gear Oil

Discussion in '2nd Gen. Tacomas (2005-2015)' started by gmcuajo, Feb 17, 2017.

  1. Feb 17, 2017 at 9:58 PM
    #1
    gmcuajo

    gmcuajo [OP] Well-Known Member

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    Just -sylvania ZXE on head & fog lights -the tires
    This question may be asked many times, but can I use store available gear oil for differentials and transfer case?

    I have 2013 Tacoma Double Cab Off-Road, 4x4 with the rear e-locker etc.

    45,000 miles

    Want to change the differentials (both) and transfer case oil.

    Manuals calls
    1. differentials: "Toyota synthetic 75W-85"
    2. Transfer case "75W-90"

    Both GL-5

    On stores ther is Valvoline and Mobil 1 synthetic 75W-90. It is ok to go with that, or do I have to purchase the expensive 75W-85 from Toyota (approx $25 per Qt)?

    Do I need any other additive?
     
  2. Feb 17, 2017 at 10:14 PM
    #2
    Mxpatriot

    Mxpatriot Well-Known Member

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    I've always used oil off the shelf at NAPA or what not. As long as it is the correct weight and type, go for it. Most oils will list what they're compatible with (GL-5, etc.)

    No LSD additive for you, as you do not have a mechanical limited slip.
     
  3. Feb 17, 2017 at 10:15 PM
    #3
    757yotas

    757yotas Well-Known Member

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  4. Feb 17, 2017 at 10:25 PM
    #4
    gmcuajo

    gmcuajo [OP] Well-Known Member

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    Just -sylvania ZXE on head & fog lights -the tires
    Thanks!
    Also,

    1. What about replacing spark plugs every 30k miles for the 1GR-FE (tacoma V6)?
    2. Replacement of coolant? Needed at 45k miles?
    3. Brake fluid?
     
  5. Feb 17, 2017 at 10:30 PM
    #5
    Mxpatriot

    Mxpatriot Well-Known Member

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    I did spark plugs at like 90k. I wouldn't replace coolant or brake fluid that early unless you just want to do it to do it.

    I do not do all the maintenance by the book. Sometimes i do it early, sometimes later. Kind of go by feel based on how I've used the truck and events.
     
    gmcuajo [OP] likes this.
  6. Feb 17, 2017 at 11:40 PM
    #6
    sparkystaco

    sparkystaco Well-Known Member

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    If the oil you buy or find says it has the LSD additive, don't worry as it won't hurt anything if it's in the oil even tho you don't need it.
     
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  7. Feb 18, 2017 at 1:53 AM
    #7
    Blockhead

    Blockhead Well-Known Member

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    Most guys on here have said they use 75/90 on all three and no issues. Don't get sucked in to the dealer telling you that only the Toyota brand fluid works...its BS and VERY expensive.

    Synthetic 75/90 fluids can be had for less than $15/qt at any auto parts store. Less than that for the non-synthetic obviously.
     
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  8. Feb 18, 2017 at 4:42 AM
    #8
    badger

    badger Well-Known Member

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    Flushing the brake system with new fluid is almost always neglected. Most corrosion related failures could be avoided by doing this. I would do it at least every 100k.
     
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  9. Feb 18, 2017 at 7:31 AM
    #9
    gmcuajo

    gmcuajo [OP] Well-Known Member

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    Just -sylvania ZXE on head & fog lights -the tires
    Manual says

    Replace coolant at 100k, then every 50k. But I always change like every 3 years to my previous cars, and that is recommended by every expert. Coolant is coolant.

    The same with break fluid, always has changed like every 3 years to other cars.
     
  10. Feb 18, 2017 at 7:32 AM
    #10
    gmcuajo

    gmcuajo [OP] Well-Known Member

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    Just -sylvania ZXE on head & fog lights -the tires
    Yes. Will go with Valvoline or Mobil 1 synthetic.
    Toyota is ridiculous!
     
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  11. Feb 18, 2017 at 7:49 AM
    #11
    aggietaco

    aggietaco Well-Known Member

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    I thought the LSD additive was only for pre-2009 sport models as well?
     
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  12. Feb 18, 2017 at 7:56 AM
    #12
    Large

    Large Red

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    I would do the plugs, it's a 20 minute job and costs next to nothing. Coolant is 100k miles, brake fluid is when it gets dark imo.
    I also do the throttle body and the MAF sensor every 15k and both diffs / tcase every 30k with 85-140.
     
  13. Feb 18, 2017 at 8:48 AM
    #13
    gmcuajo

    gmcuajo [OP] Well-Known Member

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    Just -sylvania ZXE on head & fog lights -the tires
    Why 85W-140? Isn't too thick?

    What about the tb and maf, clean with throttle cleaner?
     
  14. Feb 18, 2017 at 9:27 AM
    #14
    Large

    Large Red

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    ECGS recommended 85-140 with the nitro gears, been using it without issues for over 50k miles. And there is special MAF cleaner and TB cleaner you can get from autozone, I bought a cab of each years ago and it's still got some left in it. Use it outdoors or with a mask.
     
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  15. Feb 18, 2017 at 9:32 AM
    #15
    Pigpen

    Pigpen My truck is never clean

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    Brake fluid takes on water faster in cold climates, so I flush mine every 2 - 3 years. Down in PR, I'd imagine you could stretc
    Holy shit. I can barely get the passenger side plugs changed in 20 minutes, let alone the driver side.
     
  16. Feb 18, 2017 at 11:26 AM
    #16
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    Large Red

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    It helps that my intake is disconnected from the manifold
     
  17. Feb 18, 2017 at 3:35 PM
    #17
    jmich2001

    jmich2001 Well-Known Member

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    I did my plugs at 30K, piece of cake.($15 for densos)
    I did a drain and fill at 30K on my coolant (toyo pink pre-diluted($19)
    I had the dealership flush brake fluid at 40K.($120)

    I also had dealership drain/fill auto trans at 30K ($190)
     
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  18. Feb 18, 2017 at 3:56 PM
    #18
    shakerhood

    shakerhood Well-Known Member

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    If your truck is still under warranty I would stick with 75w-85 and you can get it in Red Line for a lot less than the Toyota brand. The manual calls for plugs every 30k so I would stick with that recommendation also.
     
  19. Feb 18, 2017 at 6:33 PM
    #19
    flying_az

    flying_az Well-Known Member

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    I did my first 30k spark plug change last week. My gas mileage increased by 1.5 mpg, so I'd say go ahead and do it.
     
  20. Feb 21, 2017 at 10:19 AM
    #20
    tgear.shead

    tgear.shead Well-Known Member

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    The transfer case needs MANUAL TRANSMISSION FLUID that is compatible with BRASS SYNCHRONIZERS.
    I would avoid the mobile 1 for the transfer case, they are *really terrible* for synchronized gear sets, despite the claims on the bottle. I had that crap in my transmission for roughly 2000 km, and it really made shifting difficult when cold. The transfer case has one synchronizer, which is for engaging the front drive. While it is electronically operated and you can't feel it, I'd be concerned about stressing it out over time.

    Can't speak to the valvoline stuff, never tried it.

    Amsoil MT fluid is good in the transfer case and manual transmission.
    The mobile 1 will be fine in differentials.
     

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