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Differential oil condition ?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by george3, Mar 15, 2010.

  1. Mar 15, 2010 at 5:38 PM
    #1
    george3

    george3 [OP] Well-Known Member

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    25k got my rear diff, transfer case, front diff and trans switched to syn from dino. The old dino in the rear diff was nasty and kinda gray. The transfer case and trans were pretty clean, gold, honey color. The front looked dirty but not as bad as the rear diff. What if anything does this tell ya ?
     
  2. Mar 15, 2010 at 5:42 PM
    #2
    WATacoRider

    WATacoRider Well-Known Member

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    at 40K, my front was nasty looking. Transfer was pristine. Rear was halfway in between.

    Do you have a LSD? What year?

    What did you use for the rear? When I used 75-90 RP in the rear, I had a slight vibration in the rear every morning. Had to switch over to Dino 80w-90 to keep it nice and smooth.
     
  3. Mar 15, 2010 at 5:42 PM
    #3
    Kyouto42

    Kyouto42 Iron Beard

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    Wee bit early eh? Did you put toyota ATF back in the transmission?
     
  4. Mar 15, 2010 at 5:47 PM
    #4
    george3

    george3 [OP] Well-Known Member

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    No LSD. Stick. 75W90 for all. Running smooth as silk.

     
  5. Mar 15, 2010 at 5:50 PM
    #5
    george3

    george3 [OP] Well-Known Member

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    Maybe but I had the opportunity to work inside with a lift thanks to David North Jersey Tacos. Better early then late and I wanted to switch. No ATF, 75W90 all the way. Stick not AT.

     
  6. Mar 15, 2010 at 7:40 PM
    #6
    singlefin

    singlefin Well-Known Member

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    Your diff fluids usually tend to look that way after some use and mileage, only thing that would make me worry is if I saw abnormal sized metal shavings/slivers. The breather on the has air coming in and out (read dirt/road grim) hot and cold not being sealed some condensation probably as well, so take that into account. The front could be cleaner due to less use, not sure if the half shafts walk when driving in 2wd or stationary. T/C and tranny fluid should still be transparent assuming the fluid you put in there was as well...It may change color as it's heat cycled and broke-in.
     
  7. Mar 16, 2010 at 12:34 AM
    #7
    george3

    george3 [OP] Well-Known Member

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    Thanks. Sounds right 2 me. Maybe I'll do the rear diff mod. Even if I don't do off road, there is plenty of moisture down there and this last week the puddles were river size.
     
  8. Mar 16, 2010 at 12:58 AM
    #8
    nvdeserted

    nvdeserted Well-Known Member

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    Gray/brown oil is indicative of water being in there. Silvery oil is common when breaking in a diff/trans etc, just insignificant metal particulate.
     
  9. Mar 16, 2010 at 1:18 AM
    #9
    george3

    george3 [OP] Well-Known Member

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    Thanks for the info.
     
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