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LSD Fluid

Discussion in 'Performance and Tuning' started by spaghettiedy, Oct 8, 2008.

  1. Oct 8, 2008 at 11:09 AM
    #1
    spaghettiedy

    spaghettiedy [OP] Well-Known Member

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    What's the best dif fuild for a 2009 Tacoma w/ limited slip differentials? I've read some many mixed opinions on it, and I would like to change it myself when the time comes. I really don't want to take it in every 30k.

    Thoughts?
     
  2. Oct 8, 2008 at 11:12 AM
    #2
    tacomaman06

    tacomaman06 Carolina Alliance: Lead, follow, or get the hell o Staff Member

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    from what i have heard.....using mobil1 with the addative already doesnt do too good with the lsd, but i have heard of people using royal purple with out any problems at all. it may be best to stick with the stuff that toyota uses though. you can probably buy the stuff from them, although it may be a bit expensive.
     
  3. Oct 8, 2008 at 11:13 AM
    #3
    lsocoee

    lsocoee My hair is all natural Staff Member

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    Wet Okole Underwear
    I've read about too many people having problems with synthetic. I'll run au natural oil when I replace mine.
     
  4. Oct 8, 2008 at 3:29 PM
    #4
    papabear050

    papabear050 Well-Known Member

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    Ditto, go synthetic in the front and xfer case. But skip it on the Rear Diff w/ LSD

    Get the oem dino oil or whatever non synthetic that is the recommended weight listed in the manual.... don't forget to add the LSD Modifer additive to it as well... then you have no potential of probs. Good luck...

    But things may change from now until your 36K, looks like you just got her..... congrats
     
  5. Oct 8, 2008 at 5:30 PM
    #5
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    4.10 gears, sliders, and lots of buttons.
    Ditto, from now on.
    My diff DID NOT LIKE Mobil1.


    At all. :(
     
  6. Oct 9, 2008 at 6:06 AM
    #6
    uuc328

    uuc328 Well-Known Member

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    has anyone tried RedLine fluid?
    i used to run it in my BMW and never had any complaints
     
  7. Oct 13, 2008 at 7:05 PM
    #7
    willard417

    willard417 Yeah

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    what happened when you guys used sythetic? i just changed it out with some lucas 75/90.
     
  8. Oct 13, 2008 at 7:06 PM
    #8
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    4.10 gears, sliders, and lots of buttons.
    When I switched to Mobil 1, My rear diff chattered, squeeled and groaned everytime I turned.
     
  9. Oct 13, 2008 at 7:11 PM
    #9
    willard417

    willard417 Yeah

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    alpine head unit, removed secondary air filter, 18" XD Rockstars. 285/60/R18, 3" OME 884/AAL OME shocks all around.
    hmm. i don't know if i hear that. how long did it take?
     
  10. Oct 13, 2008 at 7:12 PM
    #10
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    4.10 gears, sliders, and lots of buttons.
    It happened within a few days of the change. Do you have the LSD rear?
     
  11. Oct 13, 2008 at 7:14 PM
    #11
    willard417

    willard417 Yeah

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    alpine head unit, removed secondary air filter, 18" XD Rockstars. 285/60/R18, 3" OME 884/AAL OME shocks all around.
    couldn't tell you to be honest.
     
  12. Oct 13, 2008 at 7:20 PM
    #12
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    4.10 gears, sliders, and lots of buttons.
    If you dont have an LSD rear, you will be fine useing the Mobil 1 Gear oil. It should have a sticker on the diff that reads "LS oil only"
     
  13. Oct 13, 2008 at 7:24 PM
    #13
    willard417

    willard417 Yeah

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    alpine head unit, removed secondary air filter, 18" XD Rockstars. 285/60/R18, 3" OME 884/AAL OME shocks all around.
    oh.. didn't see that today when i changed it. thanks for the help.
     
  14. Oct 27, 2008 at 8:32 PM
    #14
    Teufel Hunden

    Teufel Hunden No Better Friend, No Worse Enemy

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    The 2009's no longer have an LSD. The auto-LSD is a hydraulic booster type that is electronically controlled. Here is the link with the info:
    http://www.tacomaworld.com/forum/2nd-gen-tacomas/17430-detailed-2009-tacoma-changes.html
    Therefore, you should have no problem changing to synthetic for both diffs.
     
  15. Oct 27, 2008 at 9:54 PM
    #15
    neslerrah

    neslerrah Who needs 4WD?

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    After reading about the issues with Mobil1. I decided to use Lucas as well. Since I've changed the Diff Oil, 12K miles later, still no problems with it.
     
  16. Oct 28, 2008 at 7:33 AM
    #16
    spaghettiedy

    spaghettiedy [OP] Well-Known Member

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    I'm too ignorant of the mechnics on the LSD vs Auto-LSD. So my 2009 w/ auto-lsd does or does not need limited slip fluids? Could somebody help me out, or point me in the right direction? Thanks
     
  17. Oct 28, 2008 at 9:00 AM
    #17
    wiscdave

    wiscdave Lets Do It!

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    Anybody running amsoil?
     
  18. Oct 28, 2008 at 10:08 AM
    #18
    Teufel Hunden

    Teufel Hunden No Better Friend, No Worse Enemy

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    The 2009 Tacomas no longer use a mechanical LSD, it now uses an electronically controlled LSD. Here is a description of how it works from another website (this is also breifly described on page 176 of your manual):

    The Auto LSD achieves the equivalent functions of an LSD (Limited Slip Differential) through the use of the traction control system. For this reason, the contents of brake control are the same between Auto LSD and TRAC. When the driver presses the Auto LSD switch (on our Tocaomas you turn it on by pressing the VSC OFF button), this system achieves the LSD effect by regulating the hydraulic pressure that acts on the drive wheels and controlling the engine output in accordance with the amount of pedal effort applied on the accelerator. The Auto LSD also applies brakes to the drive wheels, and controls the extent of the brake application in order to achieve the function of an LSD. However, it might not be able to achieve this function on a steep incline or on an extremely slippery surface, such as a frozen snow surface.

    Therefore, you no longer need special differential fluids with special additives made for a real LSD. I have attached the 2008 and 2009 differential oil specifications that shows the differences in what the 2009 differentials use. The 2008 and earlier required a hypoid gear oil. Whereas the 2009 requires just regular Toyota genuine oil, and if you'll notice, it says "or equivalent". Also, the viscosity is now different for the 2009 models. The new viscosity is supposed to increase MPG. So, as long as you match the oil type and viscosity, you should be fine using another brand, including the synthetics.

    I have also attached the part of the manual I referenced above that discusses the Auto-LSD.
     

    Attached Files:

  19. Nov 4, 2008 at 9:10 AM
    #19
    isusww

    isusww Well-Known Member

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    I'm going to put it in next week. HERE is what I'm going to use.

    THIS might help some of you with LSD problems.
     
  20. Nov 4, 2008 at 11:03 AM
    #20
    spaghettiedy

    spaghettiedy [OP] Well-Known Member

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    From the pdf that Teufel Hunden posted and the owners manual, the 2009 requires LT APL 75w 85 GL-5 fluids. I guess Toyota put this fluid in the 09s to help with fuel economy, and since there's no real limited slip. It's all computer controlled now.

    I am having a heck of a time finding another brand other than toyota that produces this exact weight in oil. I'm sorry but I'm not going to put another weight in run the risk of voiding the warranty. I'll just stick w/ Toyota's brand if I have to.

    So far from my research, you almost have to put gear and tranny oil from toyota in these trucks. Am I right or wrong?
     
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