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  1. #1
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    Nov 2009
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    Default UDT vs. SUDT

    I'm trying to decide what to use for my 50 hr fluids/filters change on my B2320HSD. What is the difference between the standard UDT hyrd fluid and the 'Super' UDT?? Friction modifier?? The manual seems to suggest that I can use either. My experience has taught me that more expensive is not nessessarily better.
    Thanks to all.

  2. #2
    Super Member JOHNTHOMAS's Avatar
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    Apr 2008
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    5,995
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    Somerset, Ky
    Tractor
    currently own F3080 F2680e BX25D RTV1140

    Default Re: UDT vs. SUDT

    Quote Originally Posted by Kabuki View Post
    I'm trying to decide what to use for my 50 hr fluids/filters change on my B2320HSD. What is the difference between the standard UDT hyrd fluid and the 'Super' UDT?? Friction modifier?? The manual seems to suggest that I can use either. My experience has taught me that more expensive is not nessessarily better.
    Thanks to all.
    My experience has taught me that cheaper is rarely less expensive, some times but usually not. I use SUDT in all of mine and the "piece of mind" is worth the difference between the 2 for me since I have very little actual education (knowledge imparted by those who actually know not feeling imparted by those who feel") concerning the true difference between the 2 other than dollars. My dealer recommends SUDT even when he is paying for it.
    2014 BX25D, 2008 F2680e 2WD 72" side Discharge Deck, 2012 F3080 4WD 72" rear discharge deck, 2010/2009 RTV1140CPX , RatchetRake, Forks, .. Drawbar and Horse Drawn disk 13 Toyota Tacoma Double Cab, 13 Ford Flex. 1998 SLK230, 2009 Subaru Impreza Sport

  3. #3
    Platinum Member
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    Sep 2009
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    741
    Location
    Southeast La.
    Tractor
    Kubota 2320

    Default Re: UDT vs. SUDT

    Quote Originally Posted by Kabuki View Post
    I'm trying to decide what to use for my 50 hr fluids/filters change on my B2320HSD. What is the difference between the standard UDT hyrd fluid and the 'Super' UDT?? Friction modifier?? The manual seems to suggest that I can use either. My experience has taught me that more expensive is not nessessarily better.
    Thanks to all.
    I have the identical tractor 60 hrs on it. When I did the 50 I used UDT. Wish I had used SUDT. I now have noticable whining in transmission I did not have before. Many here have suggested that is typical with UDT vs SUDT. The only real proof I have is the obvious increase in whining going from factory filled SUDT to owner filled UDT.

  4. #4
    Gold Member actionaj's Avatar
    Join Date
    Oct 2007
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    427
    Location
    Southern Illinois
    Tractor
    BX2350

    Default Re: UDT vs. SUDT

    I had the exact same experience as sailorman at the 50hr mark. Switched back to SUDT this fall at the 300hr mark night and day difference. A lot more quieter specially in colder temperatures. And to me the hydraulics seems to work smoother.
    BX2350

    FEL, RCK54 MMM, 4' Farm Star BB, 5' Farm Star RB, 5' Rake

  5. #5
    Platinum Member
    Join Date
    Oct 2009
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    657
    Location
    Freetown, MA
    Tractor
    BX24

    Default Re: UDT vs. SUDT

    I live where it gets cold so SUDT only for me. I would rather spend a few extra dollars now than a few thousand if something goes wrong.
    08 BX24 FEL, BH, 6l0" MMM, Kubota PTO Bagger, BX2750D snow blower with quick hitch

  6. #6
    Member
    Join Date
    Apr 2005
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    37
    Location
    W. College Corner, Indiana
    Tractor
    Kubota B-7800

    Default Re: UDT vs. SUDT

    Don't hesitate or procastinate. Super UDT is the only way to go.

  7. #7
    Super Star Member
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    Mar 2009
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    16,513
    Location
    Missouri
    Tractor
    Kubota, John Deere, Case, Massey Ferguson, Ford

    Default Re: UDT vs. SUDT

    My inclination is to go with SUDT as it is not that expensive no more often than you change it.

    I can't honestly say that SUDT is "better" for everyone as I used UDT on my other BX for six years and my son in law is now on his second year without problems, but I just feel better with it. I have never used anything but SUDT in my 2660, so I can't compare the two in it.
    Thread on helpful tractor abbreviations: http://www.tractorbynet.com/forums/o...-acronyms.html

  8. #8
    Super Member bp fick's Avatar
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    Aug 2009
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    5,572
    Location
    Beaver Creek, Northern Michigan
    Tractor
    Kubota BX2360

    Default Re: UDT vs. SUDT

    Kabuki

    As the others say, Super UDT. It has such a low flow rate and is designed for cold temperature use, without sacrificing high temperature protection. It is the more modern, higher tech version, if you will.

    You don't say where you are located, but unless you are in AZ, So Cal, or Florida, it is a no brainer. If you operate your tractor in temps below 32F, then SUDT is what you want.

    As it is, the warmup time is long on these hydros.
    BP


    "Some chickens, some gardens and a Kubota."

  9. #9
    Veteran Member
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    Mar 2004
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    2,438
    Location
    20 mi SE of Sacramento, CA-rural
    Tractor
    Kubota BX2200

    Default Re: UDT vs. SUDT

    UDT is for use in places where it never freezez (like where I live). SUDT is the exact same stuff, but with anti-freezing additives, for places where it gets colder than 32F/0C.

  10. #10
    Veteran Member
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    Feb 2004
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    1,906
    Location
    Brazos County Texas 77808
    Tractor
    Kubota L3130HST w/LA723 loader

    Default Re: UDT vs. SUDT

    My L3130 came with NH H/T fluid in it and was very whiney. At first change I put SUDT in it - very much quieter and smoother. We get high summer temperature here and SUDT works better on that end too.

    Here is a link for more info

    kubota UDT/SuperUDT Specifications

    Vernon
    Kubota L3130HST, BL4690B backhoe, LA723 Loader w/QA, 6' BB, 6' Bush Hog, 5' RB, PHD, ATI grapple, Hy-Reach Tree Shear, toothbar, pallet forks, grubbin bucket.

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