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Rear Diff oil brand/type? Help!

Discussion in '2nd Gen. Tacomas (2005-2015)' started by bordinco90, Nov 11, 2019.

  1. Nov 11, 2019 at 8:00 AM
    #1
    bordinco90

    bordinco90 [OP] Well-Known Member

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    Hey guys I have never change my Rear Diff oil on my 2008 tacoma v6 prerunner base 2wd. I was wondering what weight and brand of rear diff oil is the best? Also I looked in my owners manual and it says SAE 90 for the rear diff fluid. I tried looking and am not sure what oil to buy. Also I'm not sure if my tacoma has limited slip. I looked on the rear diff and did not see anything. Can anybody help?
     
  2. Nov 11, 2019 at 10:04 AM
    #2
    Lester Lugnut

    Lester Lugnut Well-Known Member

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  3. Nov 11, 2019 at 10:06 AM
    #3
    nudavinci64

    nudavinci64 Taco Outlaw

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    Stock gears use what they say 75/90 thats what most will recommend and dealer. Lucas is solid. A bunch of people use Mobil1. You will need an additive if you have limited slip but I believe that is only the sport model. Someone will respond but the manual should tell you.
     
  4. Nov 11, 2019 at 10:16 AM
    #4
    hx989

    hx989 Superunknown Member

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    Jack up rear and spin one tire by hand. If the other tire rotation is opposite you have an open diff and require no additive.
    Go to Walmart and by the cheapest dinosaur oil close to 90 weight (more won’t hurt) and change it every 30k miles. No benefits from synthetic oils whatsoever unless you like pissing away money. Cue the Amsoil crowd. Lol!
     
  5. Nov 11, 2019 at 10:17 AM
    #5
    ryfox0276

    ryfox0276 Well-Known Member

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    You will need 75wt/90. If that isn't available you can use 80wt/90. Your truck does not have a lsd so you will not need the additives for one.

    I am a cheap bastard and run supertech (Walmart) oil in my rear diff. The front and transfer case gets redline as they dont call for a change as often. Truck has been happy with this for 40,000 miles and counting.
     
    BillsSR5 likes this.
  6. Nov 11, 2019 at 10:21 AM
    #6
    eon_blue

    eon_blue Unknown Member

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    Only the 05 - 07 Sports since they had a true mechanical limited slip, the 08+ Sports have a pretend one

    Any brand gear oil is fine but I would stay away from synthetic gear oil for the diffs...East Coast Gear Supply recommends not putting synth in them anyway. Something about it not withstanding heat as well as regular if I recall. It's on their website
     
    Dirtridercrf250 likes this.
  7. Nov 11, 2019 at 10:21 AM
    #7
    RyanDCLB

    RyanDCLB Well-Known Member

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    This was for my 19 OR:




    ECGS memo can be found over here. When in doubt, go with what the manual calls out. Your truck model number can be found on the door sticker. :notsure: GL!
     
    captrussia253 likes this.
  8. Nov 11, 2019 at 10:33 AM
    #8
    hx989

    hx989 Superunknown Member

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    I run 85/140 also. Only reason they put the thinner stuff in factory is probably fuel economy
     
    Dirtridercrf250 likes this.
  9. Nov 11, 2019 at 11:02 AM
    #9
    bordinco90

    bordinco90 [OP] Well-Known Member

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    Thanks. I think I need to buy 4 quarts of the stuff. Also what about the washers? I seen an thread on here and someone mentioned the metal washers are on Amazon. Can someone link them please? Does the metal washers need to be replaced on both plugs? Thanks again guys. Also I've owned the truck since new and have never changed the rear diff oil. The truck currently has about 160k.
     
  10. Nov 11, 2019 at 11:12 AM
    #10
    bordinco90

    bordinco90 [OP] Well-Known Member

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    What are some non-synthetic gears oils to look at? It seems like everything sold online is synthetic.
     
  11. Nov 11, 2019 at 11:21 AM
    #11
    69L46Vert

    69L46Vert Well-Known Member

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    I used these for my 07 w/MT. More than enough for changing all the gear oil. Front diff, Transmission, T/case and rear diff. There were a few left over. Some are crush type. Others are flat/solid. I used Supertech 75/90 in everything but would use something different in the transmission if I did it again.

    https://www.amazon.com/gp/product/B07Q3R7TWG/ref=ppx_yo_dt_b_asin_title_o03_s01?ie=UTF8&psc=1
     
  12. Nov 11, 2019 at 11:29 AM
    #12
    RyanDCLB

    RyanDCLB Well-Known Member

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  13. Nov 11, 2019 at 11:29 AM
    #13
    bordinco90

    bordinco90 [OP] Well-Known Member

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    Cool thanks! I will definitely buy this! Now time to decide on the oil brand.
     
  14. Nov 11, 2019 at 11:31 AM
    #14
    eon_blue

    eon_blue Unknown Member

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    bordinco90 [OP] likes this.
  15. Nov 11, 2019 at 11:32 AM
    #15
    bordinco90

    bordinco90 [OP] Well-Known Member

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  16. Nov 11, 2019 at 11:33 AM
    #16
    Accipiter13

    Accipiter13 Well-Known Member

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    I don’t think we need to do the ECGS debacle again.

    75/90 in whatever brand makes you feel good. Done. Don’t overthink this.
     
    bordinco90 [OP] likes this.
  17. Nov 11, 2019 at 11:41 AM
    #17
    Armed in Utah

    Armed in Utah Well-Known Member

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    GL-5......75-90......
     
  18. Nov 11, 2019 at 11:44 AM
    #18
    69L46Vert

    69L46Vert Well-Known Member

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    The 85/140 is a heavier oil. Heavier than recommended but I wouldn't hesitate to use it if you think you need extra protection ie. severe service, heavy towing, or any uses that may shock the gears more than normal. May decrease your mileage but probably insignificanty.
     
    bordinco90 [OP] likes this.
  19. Nov 11, 2019 at 11:47 AM
    #19
    bordinco90

    bordinco90 [OP] Well-Known Member

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    I've been looking at the mobil 1 but the ones that I have found are the: mobil delvac 1 and mobil 1 LS (I assume thats limited slip, which I'm not sure I'll need). Lucas is another brand I'm looking at.
     
  20. Nov 11, 2019 at 11:50 AM
    #20
    Accipiter13

    Accipiter13 Well-Known Member

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    Is it Gf-5 75/90? Yes? great, it will work.

    The mobil1 “LS” will work fine in your truck. That is what I (and many, many others) use (I’ve used lucas, Valvoline, etc. in other vehicles as well.)
     
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