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  1. #1
    Member
    Join Date
    Apr 2008
    Posts
    28
    Location
    Austin, Texas
    Tractor
    Kubota L3240

    Default Kubota UDT Vs. Super UDT

    Hello, it is time for my 50 hour service. Has anyone here changed from kubota SUDT to Kubota UDT and noticed a change in performance (HST transmission)? I have searched here but did not find anyone with personal experience. I live in Austin Texas where winters are mild and temps rarely get below freezing. Summers are really hot. I have a 3240 HST with 724 loader. My manual states the tractor comes from the factory with SUDT. It performs very well. I was hoping to use regular UDT fluid to save some money. I just paid $120 for 3 oil filters.

  2. #2
    Platinum Member medicshawn's Avatar
    Join Date
    Oct 2007
    Posts
    660
    Location
    Central VA
    Tractor
    Kubota L3940 FEL HST

    Default Re: Kubota UDT Vs. Super UDT

    I would think there's a reason it comes with SUDT from the factory and consider it cheap insurance. Especially if there's a warranty issue that they try to blame on using udt versus sudt.
    BX1860 Mowing Machine
    L3940 FEL Sold
    B7800 TLB Sold
    IAFF Local 1568

  3. #3
    Elite Member dex3361's Avatar
    Join Date
    Aug 2008
    Posts
    3,571
    Location
    N. of Charleston WV
    Tractor
    Kubota L4400-1 HST,FEL, 3x3 remotes, TNT. BX1500 54 mmm

    Default Re: Kubota UDT Vs. Super UDT

    Quote Originally Posted by digdug1 View Post
    Hello, it is time for my 50 hour service. Has anyone here changed from kubota SUDT to Kubota UDT and noticed a change in performance (HST transmission)? I have searched here but did not find anyone with personal experience. I live in Austin Texas where winters are mild and temps rarely get below freezing. Summers are really hot. I have a 3240 HST with 724 loader. My manual states the tractor comes from the factory with SUDT. It performs very well. I was hoping to use regular UDT fluid to save some money. I just paid $120 for 3 oil filters.
    I have heard that you may hear more whine with UDT. The UDT meets the Warranty requirements.I talked to my parts dealer in WV he reccomends the UDT over the SUDT in our area. the SUDT is not a synthetic as some belive. According to the dealer the SUDT is a little thinner in viscosity and is better suited for those who live in colder climates. With the dealers advice in mind I will probably swap the Factory SUDT for UDT when the time is up. Though I let my machine warm up when its cold even with the factory shipped SUDT. I may also search for a synthetic and compare prices.
    Randall



    1Timothy Chapter 2:
    3 For this is good and acceptable in the sight of God our Saviour;
    4 Who will have all men to be saved, and to come unto the knowledge of the truth.
    5 For there is one God, and one mediator between God and men, the man Christ Jesus.
    From: The HOLY BIBLE

  4. #4
    Member
    Join Date
    Jul 2006
    Posts
    33
    Location
    Seattle, WA
    Tractor
    Kubota B7100 4wd

    Default Re: Kubota UDT Vs. Super UDT

    After considerable research, the dealers indicate that UDT will work fine in warmer climates and many use UDT. Those individuals that choose SUDT do so out of fear of warranty concerns. I switched to UDT due to cost and mild temps in the PNW.

  5. #5
    Gold Member
    Join Date
    Jun 2006
    Posts
    325
    Location
    Oklahoma
    Tractor
    2006 Kubota L2800 HST

    Default Re: Kubota UDT Vs. Super UDT

    My dealer recomended UDT so of course I went with SUDT. I believe SUDT is a multi-viscosity (10W-30) and UDT is a single grade (SAE 30), The SUDT is supposed to work better in cold weather starts. I does not get that cold in Oklahoma but it work fine at 10ºF which is the coldest I have used the tractor .
    Marcussen
    Kubota L2800 HST
    Kubota LA463 FEL
    Woods GB60 Box blade
    Woods Brushbull BB60 (Rotary mower)
    535 hours

  6. #6
    Gold Member Ace3's Avatar
    Join Date
    Jan 2008
    Posts
    257
    Location
    Albany, New York
    Tractor
    Kubota L3540 Cab

    Default Re: Kubota UDT Vs. Super UDT

    For what its worth, my dealer only recommends SUDT for the area I live in. He told me that I could use UDT but I would be back to replace it with SUDT after the oil filters blew appart. He claims to have seen it numerous times.

  7. #7
    New Member
    Join Date
    Aug 2007
    Posts
    4

    Default Re: Kubota UDT Vs. Super UDT

    do a search since this issue is like 6+ years old....

  8. #8
    Gold Member
    Join Date
    Feb 2005
    Posts
    459
    Location
    Southern NH
    Tractor
    2 L48s, KX121-3, RTV 1100 and a couple of older Fords

    Default Re: Kubota UDT Vs. Super UDT

    I considered using Tractor Supply Store oils which they claom is the sam au UDT and even have a pREMIUM BLEND AS WELL, BUT HAVING BEEN DISAPOINTED WITH SOME OF THEIR OTHER STUFF, i SAid (sorry about the caps) now way. Cheap oil is....cheap oil. SUDT is $105 a 5G pail up here. Yikes!!!!

  9. #9
    Member
    Join Date
    Apr 2008
    Posts
    28
    Location
    Austin, Texas
    Tractor
    Kubota L3240

    Default Re: Kubota UDT Vs. Super UDT

    Thanks for all the input.

    Waterlogged - is your machine HST?....did you notice any changes when you switched to UDT?

  10. #10
    Gold Member nh DRAGON's Avatar
    Join Date
    Jan 2007
    Posts
    337
    Location
    Southern New Hampshire
    Tractor
    Kabota BX2350

    Default Re: Kubota UDT Vs. Super UDT

    I switched to udt last spring and I have ran my tractor in -20f this year even from complete cold and not only did I not hear any extra wine but it did not move slow or blow any filter off ether!

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