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rear diff oil

Discussion in '1st Gen. Tacomas (1995-2004)' started by Max-4_Yota, Dec 25, 2009.

  1. Dec 25, 2009 at 9:38 PM
    #1
    Max-4_Yota

    Max-4_Yota [OP] The Welfare Cadilac

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    i know its already been menitoned but here it goes, my truck has 104K on it and ive been thinkin bout changin the rear diff fluid. what all will i need, i know i need a 24mm socket. Mobil1 oil but what weight and what about the lsd stuff. what is that?
     
  2. Dec 25, 2009 at 9:42 PM
    #2
    rab89

    rab89 Well-Known Member

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    LSD is for the 2nd gen guys (limited slip differential)
     
  3. Dec 25, 2009 at 9:44 PM
    #3
    blake1012

    blake1012 Go Braves!

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  4. Dec 25, 2009 at 9:51 PM
    #4
    BakoTruck

    BakoTruck Well-Known Member

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    Mostly stock for now, I have added a cb radio, various cheap mods and I plan on adding aftermarket wheels and other items in the future.
    Hello Max-4_Yota!
    Here is a good link that explains the "How To" part of changing it out, It's a oil change for a 2nd Gen but it is pretty much the same process.

    http://www.tacomaworld.com/forum/technical-chat/24545-changing-differential-fluid-step-step-how.html

    I would suggest going with Mobil 1 synthetic 75W-90, I also don't think the 1st gen's come with LSD's but I could be wrong. Check the diff cover and see if it has a sticker with LSD printed on it. If it doesn't, than you should be fine and not worry about it.
    If it does than you should use Dino oil (none synthetic oil) and the same stuff they used on that link I put up.

    I hope that helps, and welcome to TW
     
  5. Dec 25, 2009 at 10:01 PM
    #5
    BG04Taco

    BG04Taco Well-Known Member

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    There is a limited slip additive for the gear oil but I put Royal Purple in mine 75 90 and it already has it in there. Shops who change my diff oil offered LSA separately although my differential is not LS.
     
  6. Dec 25, 2009 at 10:07 PM
    #6
    Yoytoda

    Yoytoda The Little Truck That Could

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    mobil 1 75w-90 LS is LSD safe. I just did mine... still smell it on me, yuck
     
  7. Dec 25, 2009 at 10:35 PM
    #7
    AvsFanTRD

    AvsFanTRD Oh gravity, thou art a heartless bitch!

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    I could be wrong but if you've never changed it before, I'm not sure you should use synthetic now with so many miles. Anyone know otherwise? Where's chris4x4 he's the officiato on this sort of thing.
     
  8. Dec 25, 2009 at 10:41 PM
    #8
    BG04Taco

    BG04Taco Well-Known Member

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    I heard it was a rumor it made a difference and it didn't matter if you switched to synthetic.
     
  9. Dec 25, 2009 at 10:44 PM
    #9
    Yoytoda

    Yoytoda The Little Truck That Could

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    that is another common synthetic myth. synthetic just lubricates better and is still the same weight (75w-90 is same weight whether synthetic or not)

    The original myth is that synthetic is rougher on old seals, but its a myth none the less...

    My pops has a 89 suburban back in ny that was switched over to synthetic at 150k and currently has 400k+ on stock drivetrain. Synthetics are awesome
     
  10. Dec 25, 2009 at 10:48 PM
    #10
    SC4333

    SC4333 Well-Known Member

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    ^^^^^^^ This is correct. It makes no difference at what mileage you switch over to synthetic, and will not cause oil leaks any more than conventional oil would when comparing like for like oil weights.
     
  11. Dec 25, 2009 at 10:57 PM
    #11
    Yoytoda

    Yoytoda The Little Truck That Could

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    Synthetics are probably the best investments you can do to protect a vehicles longevity. my sister had an old pos dodge shadow and after i convinced her to go synthetic it ran for 175k which is amazing for that little shit box. It finally died when but not the engine, it had a electrical issue not worth fixing
     
  12. Dec 26, 2009 at 4:38 AM
    #12
    Taco John

    Taco John Well-Known Member

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    IMHO, the real advantage to synthetic gear lubes is the longer change interval. If you still need to change them frequently because of contamination (such as submerged axles) then stick with the dino juice and change it.

    In my wife's daily driver, though, the extended change intervals are nice!
     
  13. Dec 26, 2009 at 9:08 AM
    #13
    Max-4_Yota

    Max-4_Yota [OP] The Welfare Cadilac

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    thanks im gonna go with the Mobil1 75w-90
     
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