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Fluid change questions

Discussion in '2nd Gen. Tacomas (2005-2015)' started by 12taco12, Aug 23, 2017.

  1. Aug 23, 2017 at 6:33 PM
    #1
    12taco12

    12taco12 [OP] Well-Known Member

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    alright guys i have oil change coming up. i want to do the case and diffs as well. i use full synthetic amsoil for engine so prob stick with it for the others as well (unless someone thinks of better)

    its 2012 TXpro (trdpro) and has 92xxx give or take and I'm sure the diffs and t case have not been done, obviously 4x4

    so what will i need? best fluids? safe to switch to synthetic at this mileage?any other things i may need to know?

    thanks guys
     
  2. Aug 23, 2017 at 6:44 PM
    #2
    Northern Taco

    Northern Taco Well-Known Member

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    I used Lucas 75w90. I believe all 75w90 fluid is synthetic (same idea as all 0w20 motor oil is synthetic)

    Rear diff and transfer case use nice big bolts, (24mm) the front diff is a 10mm Allen head bolt and usually full of crud (the Allen head) so make sure it's cleaned out good and keep your Allen key/socket nice and square in the head of the bolt so you don't end up stripping it.

    I bought a transfer pump off Amazon which made life easier. I've done all these fluids on my last 2 tacomas, and the front diff can be tricky if you rush and strip the Allen head bolt.

    Read this as well
    https://www.tacomaworld.com/threads/front-diff-and-transfer-case-oil-change-howto.147631/
     
  3. Aug 23, 2017 at 6:50 PM
    #3
    BlueMile

    BlueMile Frozen north specialist

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    For the front diff & transmission, a manual hand pump is almost necessary, you can do it without, but it's far messier.

    Ask me how I know...
     
  4. Aug 23, 2017 at 8:50 PM
    #4
    timothom

    timothom Well-Known Member

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    Auto or manual tranny?
     
  5. Aug 24, 2017 at 4:59 AM
    #5
    12taco12

    12taco12 [OP] Well-Known Member

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  6. Aug 24, 2017 at 5:18 AM
    #6
    12taco12

    12taco12 [OP] Well-Known Member

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    how much oil do i need all 3 the same weight?, i searched for write ups but can't seem to find any, and ive heard that possibly because I'm at 93xxx switching to synthetic now is bad?


    FLUID GURUS??
     
  7. Aug 24, 2017 at 5:24 AM
    #7
    DaveInDenver

    DaveInDenver Not Actually in Denver

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  8. Aug 24, 2017 at 5:26 AM
    #8
    12taco12

    12taco12 [OP] Well-Known Member

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    so diffs and t case are 75-90. like stated i wanted to use amsoil full synthetic. any options on brand works best for people
     
  9. Aug 24, 2017 at 5:32 AM
    #9
    DaveInDenver

    DaveInDenver Not Actually in Denver

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    My owner's manual calls for 75W-90 in the transfer case (GL-4 or GL-5) and front axle (GL-5) and straight 90 weight (GL-5) unless it's exceptionally cold (0F/-18C) then 80W or 80W-90. This was the same as my old truck and I ran the same weights. Those axles went 287K so I don't think it's that critical.

    FWIW, I sometimes run just regular Castrol Hypoy-C in the axles since it's a lot cheaper and I don't mind changing more often. It tends to contaminate once in a while from creek crossing and stuff. I run nothing but MT-90 though, I find Toyota transmissions benefit from it.
     
    Last edited: Aug 24, 2017
  10. Aug 24, 2017 at 5:41 AM
    #10
    Northern Taco

    Northern Taco Well-Known Member

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    Read the thread I linked in my earlier post. Everything you'd ever want to know about this.

    As for oil brands, well:violent:
     
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  11. Aug 24, 2017 at 5:43 AM
    #11
    Blockhead

    Blockhead Well-Known Member

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    I use 75/90 synthetic, Mobil 1 or Lucas or whatever...you will need roughly 6 qts for all three diffs. It's a stinky, sometimes messy job but worth the money saved by DIY
     
  12. Aug 24, 2017 at 5:50 AM
    #12
    2002Tacoma4x4

    2002Tacoma4x4 TRD 4x4 double cab

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    BG PRODUCTS.jpg

    IMHO if you like the best synthetic fluids Toyota Dealer carries the BG PRODUCTS....

    https://www.bgprod.com/

    I saw and read every single presentation video and technique of each product and service, did all of them at Toyota of Plano , all kind of fluids and flushes in a 4wd truck including brakes, power steering , etc All at once

    they worked fine for me :oldglory: , once again matter of opinion and budget but I like a lot the smoothness and good service. Planning on returning on the 30,000 miles intervals for doing all of them whenever time comes, ( I don't DIY anything besides coffee :smash::smack:
     
    Last edited: Aug 24, 2017
    SLeeper512 likes this.
  13. Aug 24, 2017 at 4:54 PM
    #13
    12taco12

    12taco12 [OP] Well-Known Member

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    what link?
     
  14. Aug 24, 2017 at 5:30 PM
    #14
    Northern Taco

    Northern Taco Well-Known Member

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    My first reply
     
  15. Aug 24, 2017 at 5:44 PM
    #15
    Holeshot

    Holeshot Well-Known Member

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    I just did my '15 TRD Off Road 4x4 at 29,000 miles and used a total of almost 6 quarts of Mobile 1 75w90 synthetic.

    By all means use a transfer pump. I used one sold for changing the lube in an outboard motor lower unit and it worked great.

    As mentioned above you need a 24 mm socket and a 10mm hex socket (looks like an Allen wrench end on it). I did have to remove the skid plate to get to the front diff.
     
  16. Aug 25, 2017 at 2:48 AM
    #16
    Blockhead

    Blockhead Well-Known Member

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    FYI ... a T-55 Torx bit actually works better than a 10mm hex when doing the front diff. I know it sounds like it doesn't make sense but trust me, it does, especially when there's crud buildup.
     
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  17. Aug 25, 2017 at 4:49 PM
    #17
    12taco12

    12taco12 [OP] Well-Known Member

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    ok so here is NY in winter can def get below 0, should i be using diff fluid in any of the 3 places because of that
     
  18. Aug 25, 2017 at 11:12 PM
    #18
    Northern Taco

    Northern Taco Well-Known Member

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    :confused: 75w90. :smack:
     
  19. Aug 25, 2017 at 11:38 PM
    #19
    cosmicfires

    cosmicfires Well-Known Member

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    The AmsOil website will tell you what you need.
     
  20. Aug 26, 2017 at 5:13 AM
    #20
    12taco12

    12taco12 [OP] Well-Known Member

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    only says transaxle and manual trans fluid
     

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