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Recommended oil weight for rear differential

Discussion in '1st Gen. Tacomas' started by Backinblack03, Jun 24, 2013.

  1. Sep 16, 2013 at 5:13 PM
    #41
    Norton

    Norton Senior TW Member

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  2. Sep 16, 2013 at 5:48 PM
    #42
    TacoMan1911

    TacoMan1911 Well-Known Member

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    I have an 08 reg cab base and I changed mine with mobil 1 75w 90. Took 4 full quarts until full. Anybody know what the specs call for as far as quantity or past experience?
     
  3. Sep 16, 2013 at 6:06 PM
    #43
    Norton

    Norton Senior TW Member

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    4 quarts sounds like a lot of oil for a differential, but you'll probably get more relevant responses to your question in the 2nd Gen. Tacomas forum.
     
    Last edited: Sep 16, 2013
  4. Sep 16, 2013 at 6:10 PM
    #44
    TACO TX

    TACO TX Well-Known Member

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    Idk what the specs are but im for certain it isnt 4qts. Was the truck anywhere near level when you pumped it in.


    Edit: seems as though that is about correct, 3.4qts. By the time you leave a little in each court you would be right on.
     
    Last edited: Sep 16, 2013
  5. Sep 16, 2013 at 6:13 PM
    #45
    TacoMan1911

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    It is a second gen., and the truck was perfectly level in my garage. The book says 3.5, but at that much the diff was no where full. At exactly 4, the oil started to slowly come out of the fill hole. How much does your truck take?
     
  6. Sep 16, 2013 at 6:22 PM
    #46
    TACO TX

    TACO TX Well-Known Member

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    Yea i know, i corrected. If your pumping it in you leave quite a bit in each qt which i add to the next qt and then at the end i have what should be in your case .5qt left over. Mine has the locker and only takes like 2.5qt.
     
    Last edited: Sep 17, 2013
  7. Sep 17, 2013 at 6:37 AM
    #47
    jlove1974

    jlove1974 Active Member

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    Not sure about a Gen 2 Taco, but my non-LSD 3.90 geared Gen 1 rear end held right around 3.75 qts. Of course, I pumped it from a gallon container and there was some left in the pump. Fiddling with all those quart containers doesn't work well with transmissions/transfer cases so I only buy gear oil in gallon jugs now.
     
  8. Sep 18, 2013 at 2:06 PM
    #48
    Backinblack03

    Backinblack03 [OP] Well-Known Member

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    ABS? What ABS?
    Typically old-school, you can fill the case until it starts to run out the fill hole... Works on boat lower units all day long... Not sure if over-filling will cause any damage on the truck though...
     
  9. Sep 18, 2013 at 4:13 PM
    #49
    TACO TX

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    Thats how i do it, i just keep a talley to see how close i actially got to the number. If your truck was really unlevel and you crammed a bunch in there you would problay blow the axle seals out is all if it didnt burp through the breather.
     
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