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LSD Rear Diff Oil - Amsoil users please!

Discussion in 'Technical Chat' started by Janster, May 15, 2010.

  1. May 15, 2010 at 11:50 AM
    #1
    Janster

    Janster [OP] Old & Forgetful

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    Yeah I know....I did search and found varying info. I'm bored, so I thought i'd post a new one.

    I'm shooting towards using Amsoil Severe Gear in the tacoma (mechanical) LSD.

    The reason for going this route, is because we have it in our Vette LSD rear and our neiphews corvette LSD rear and its been flawless.

    I've been reading - it's a hit or miss - some folks are fine while other folks need additional Amsoil slip lock additive.

    What's your experience?
     
  2. May 15, 2010 at 11:54 AM
    #2
    whippersnapper02

    whippersnapper02 Well-Known Member

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    My buddy used it in his GTO. It worked fine for about a week but he ended up needing the additive because the diff started chattering.
     
  3. May 15, 2010 at 11:54 AM
    #3
    BlueT

    BlueT Well-Known Member

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    try it but be prepared to drain it the same day. So have 80W-90 with additive handy just in case. ;)
     
  4. May 15, 2010 at 11:57 AM
    #4
    Brunes

    Brunes abides. Thor

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    Let us know how it works out!! I've been considering making some fluid swaps...haven't really though too hard about it- but more info never hurts!!
     
  5. May 15, 2010 at 12:54 PM
    #5
    Janster

    Janster [OP] Old & Forgetful

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    Did you use the Amsoil Severe Gear in your truck? Or are you just repeating what you've read online?
     
  6. May 15, 2010 at 4:40 PM
    #6
    BlueT

    BlueT Well-Known Member

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    I moded 1999 Taco so much it had turned to Land Cruiser
    I tried every synthetic i could get my hands on including Amsoil with various results. Some oils had no chattering for 3 months then went Grrrrrr which sucked others went Grrr right after the oil change so got replaced the same day. I think I had done atleast 12 oil changes on my diff at this point. But Yesterday I found secret weapon which I will be trying very soon. If that works and Data sheet numbers match regular oil it may be a lucky strike.
    My problem is this.
    Running regular diff oil sucks since temperature of the diff is off the chart and at the flash point of regular oils. Synthetics drop temperature a lot but you can not use it with out Grrrr sound. I am hoping at one point I will score right synthetic + additive combination that will work year round.
     
  7. May 16, 2010 at 4:31 AM
    #7
    Janster

    Janster [OP] Old & Forgetful

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    When you were getting chattering or Grrr....did you add more friction modifier? Or did you just drain everything and start over?
     
  8. May 17, 2010 at 1:14 PM
    #8
    Airun

    Airun Well-Known Member

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    same problem with 07. keep the info flowing guys. I'm getting ready to try a GL-5 fluid from Napa with additive. both made by CRC. we'll see.
     
  9. May 17, 2010 at 1:55 PM
    #9
    BlueT

    BlueT Well-Known Member

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    I moded 1999 Taco so much it had turned to Land Cruiser
    added 12 oz of additive then just drained over, same story for almost everything.
    Honestly I have a strange feeling that oil is nto the issue its the LSD additive they use with oil that its a problem. There are multiple additives so I am wondering that maybe what oil producers add is the wrong kind for our LSD and what we need more then dino vs synthetic is a oil that has no factory additive in it. Airun asked me what oil I am thinking and I did post replay to him but I will post here too. I found Mobil Delvac 80W-140 which is gear, synthetic for the trucks (18 wheelers). The bottle I saw had no LSD additive in it so thats the plan. Over the weekend I am going to stop by GM and pick up additive then dump Delvac in the diff and see how it goes. Worst comes to worst I will change it again to regular oil. :D
     
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