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  1. #1
    Platinum Member
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    Apr 2008
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    576
    Tractor
    B2920 TLB turfs and loaded ags

    Default hydro fluid? - not SUDT vs UDT!

    How much of your hydro fluid do you actually change on a tractor with a loader and backhoe? I would imagine there is a lot of fluid in those implements. Given this can you really change the type of fluid (and does it matter)?

    with all the debate about SUDT vs UDT I would not be a bit surprised to find out may dealers use neither. When I tried to buy SUDT for my BX last year from Gaithersburg kubota I was told they did not carry any Kubota hydro fluid - just new Holland. I would think many tractor dealers buy in bulk based on who their supplier is and what the best deal is. Just because you take your Ford F150 in for an oil change does not mean you are getting Ford oil. I work for a Lexus dealership and although we do stock toyota fluid we do not use it in our shop. Even if we have a warranty repair and the manufacturer pays for the fluid we use Pennzoil which is a a huge drum outside and fed to all of the bays via over head reels. As far as the type other than being dictated by oil weight and weather as long as the fluid is changed regularly it probably does not matter at all. Motors blow but to find one with all maintenance done that just had a fluid failure - I don't know about that. As a matter of fact I most of this fluid is not manufactured by any equipment companies but made by oil companies and put into a ford etc package. Even though I know this I was disappointed that they did not carry the Kubota fluid and drove to another store to buy SUDT! I like SUDT vs UDT and I will use this fluid as long as I have the tractor.If I was a tractor dealer I would probably just pump what ever hydro fluid into it that we had - maybe with a thought about weather but depending on my location I would probably only have one available in bulk. One thing that occurs to me is the casual users may be more picky about this than the pros. If a landscape company uses a Skid steer for business in really tough conditions are they sticking to only John Deere hydro fluid? Probably not.
    These things come shipped in a crate with no fluid. If I had bought my BX from GB it would have had NH fluid. With all the debate about SUDT vs UDT I wonder how many brand new Kubotas have neither?
    B2920 TLB, turfs and loaded ags, thumb, 60 & 50" QA buckets, Kubota QA forks, toothbar, BX42 chipper, 60" front hydro blade and hitch, Herd M96 spreader, turf vent 48" 3pt aerator, Woods LRC 60" rake and Woods 48" estate BB, County Line 60" rear blade, rear spacers, pats easy change. Polaris 800 w/60" Blizzard plow & John Deere 717a ZTR

  2. #2
    Super Member bp fick's Avatar
    Join Date
    Aug 2009
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    5,498
    Location
    Beaver Creek, Northern Michigan
    Tractor
    Kubota BX2360

    Default Re: hydro fluid? - not SUDT vs UDT!

    Really hard to know. Those dealerships with multiple "colors" may indeed favor the fluid of one color and use it in most cases.

    My gut says that the majority kubota dealers are Kubota fluid oriented. Even those in this area who do sell multiple colors, have a huge K fluid section on display and use it.
    BP


    "Some chickens, some gardens and a Kubota."

  3. #3
    Veteran Member
    Join Date
    Jun 2010
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    1,316
    Location
    Myrtle Creek, Oregon
    Tractor
    Kubota l3130

    Default Re: hydro fluid? - not SUDT vs UDT!

    Quote Originally Posted by donn12 View Post
    with all the debate about SUDT vs UDT I would not be a bit surprised to find out may dealers use neither. When I tried to buy SUDT for my BX last year from Gaithersburg kubota I was told they did not carry any Kubota hydro fluid - just new Holland. I would think many tractor dealers buy in bulk based on who their supplier is and what the best deal is. Just because you take your Ford F150 in for an oil change does not mean you are getting Ford oil. I work for a Lexus dealership and although we do stock toyota fluid we do not use it in our shop. Even if we have a warranty repair and the manufacturer pays for the fluid we use Pennzoil which is a a huge drum outside and fed to all of the bays via over head reels. As far as the type other than being dictated by oil weight and weather as long as the fluid is changed regularly it probably does not matter at all. Motors blow but to find one with all maintenance done that just had a fluid failure - I don't know about that. As a matter of fact I most of this fluid is not manufactured by any equipment companies but made by oil companies and put into a ford etc package. Even though I know this I was disappointed that they did not carry the Kubota fluid and drove to another store to buy SUDT! I like SUDT vs UDT and I will use this fluid as long as I have the tractor.If I was a tractor dealer I would probably just pump what ever hydro fluid into it that we had - maybe with a thought about weather but depending on my location I would probably only have one available in bulk.
    UDT is not a hydraulic fluid, it is a transmission fluid. It has a bunch of high impact additives that protect the gears. SUDT is a synthetic base, and flows better in cold conditions. Trying to pump goo through a HST is hard on it. My operator's manual says not to use high range until the UDT is up to operating temperature.

    For anyone who is interested, a few weeks ago I was topping off the transmission fluid in my dad's AC 175 with Chevron 1000 THF transmission fluid, and it says on the label that it is a substitute for Kubota UDT.

  4. #4
    Super Star Member
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    Mar 2009
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    16,213
    Location
    Missouri
    Tractor
    Kubota, John Deere, Case, Massey Ferguson, Ford

    Default Re: hydro fluid? - not SUDT vs UDT!

    I went to a kubota dealer with my first Kubota that only sold New Holland lubricants so that is what I used.
    Thread on helpful tractor abbreviations: http://www.tractorbynet.com/forums/o...-acronyms.html

  5. #5
    Super Member bp fick's Avatar
    Join Date
    Aug 2009
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    5,498
    Location
    Beaver Creek, Northern Michigan
    Tractor
    Kubota BX2360

    Default Re: hydro fluid? - not SUDT vs UDT!

    Quote Originally Posted by Larry Caldwell View Post
    UDT is not a hydraulic fluid, it is a transmission fluid. It has a bunch of high impact additives that protect the gears. SUDT is a synthetic base, and flows better in cold conditions. Trying to pump goo through a HST is hard on it. My operator's manual says not to use high range until the UDT is up to operating temperature.

    For anyone who is interested, a few weeks ago I was topping off the transmission fluid in my dad's AC 175 with Chevron 1000 THF transmission fluid, and it says on the label that it is a substitute for kubota UDT.
    Chevron is synthetic and it states it meets sudt specs.

    However, Kubota SUDT is not a synthetic. Kubota has stated many times that SUDT is not a synthetic. It is high quality, low viscosity universal tractor fluid, made by Ashland in the US and PetroCanada??? in the True North, but is merely called Premium. One viscosity only in Canada. No debates in Maple Leaf Land.
    BP


    "Some chickens, some gardens and a Kubota."

  6. #6
    Veteran Member DiezNutz's Avatar
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    May 2006
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    1,019
    Location
    Central MD
    Tractor
    Kubota B3030-HSD-F

    Default Re: hydro fluid? - not SUDT vs UDT!

    Nicely put, BP. No matter how many times it's been explained, the "SUDT is synthetic" myth just keeps circling the drain.

    I also beg to differ that both UDT & SUDT indeed ARE hydraulic fluids, as effectively are all automatic transmission fluids...
    Kubota B3030-HSD w/R4s, LA403 60" FEL w/ATI TB, RCK60" MMM, Woods BH80-X 4pt Hoe w/24"+12" bkts & Thumb, Woods RB72" Blade w/shoes

  7. #7
    Super Member JOHNTHOMAS's Avatar
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    Apr 2008
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    5,774
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    Somerset, Ky
    Tractor
    currently own F3080 F2680 B2620 FEL/BH RTV1140

    Default Re: hydro fluid? - not SUDT vs UDT!

    Not 100% sure on this but I believe it's true. If you buy a new kubota it will have SUDT from the factory.
    They do not come to the dealer topped off as some of us have found out. The dealer that does the final assembly of the new tractor should top off all fluids. If the final assembling dealer doesn't have SUDT then what do they top it off with? Right, probably whatever they have.
    I know we have a few dealer on this forum. If what I say isn't true, then step forth and say it is or isn't right.
    Some on here have went with UDT instead of SUDT when they did their service and some of them have said the UDT created the transmission to be noisier or less responsive and some have said no difference. If I were to change to UDT and it did not perform as well, I would be a very unhappy camper due to the trouble and expense of dumping the UDT and adding SUDT. Mine have all worked fine with the SUDT that came from the factory so why would I change? Save a few bucks if it worked the same? Lose a few bucks if it didn't?
    No one seems to dispute there is a difference between SUDT and UDT. Is the difference of any value seems to be the question.
    If there is no value in the difference, why does the factory buy and install the more expensive fluid? How much more money does Kubota spend each year on the total number of tractors manufactured by using SUDT vs UDT?
    2012 B2620 FEL BH, 2008 F2680 2WD 72" side Discharge Deck, 2012 F3080 4WD 72" rear discharge deck, 2010/2009 RTV1140CPX , RatchetRake, Forks, ...DEARBORN 2 BOTTOM PLOW 12" ?? FOR SALE $425).... Drawbar and Horse Drawn disk 13 Toyota Tacoma Double Cab, 13 Ford Flex. 2009 Subaru Impreza Sport

  8. #8
    Silver Member
    Join Date
    Apr 2010
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    110
    Location
    U P of Michigan
    Tractor
    BX2660

    Default Re: hydro fluid? - not SUDT vs UDT!

    Guy who delivered my BX2660 topped the fluids off with New Holland and said to use any kind. So much for running pure kubota SUDT or UDT.

  9. #9
    Gold Member
    Join Date
    Jun 2007
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    434
    Location
    MD and FL
    Tractor
    Kubota BX24

    Default Re: hydro fluid? - not SUDT vs UDT!

    Quote Originally Posted by donn12 View Post
    ..When I tried to buy SUDT for my BX last year from Gaithersburg kubota I was told they did not carry any Kubota hydro fluid - just new Holland...
    FYI...they do now, at least UDT. Picked up some about a month ago...
    John

    BX24-loaded R4s/60" MMM/rear bagger/arm rests, Woods RCC42, 3PT Splitter, TuffTop, Bro-Tek skidplates/thumb/ripper, BXpanded forks/bag, American Solutions grapple, Berlon mini-toothbar, home-made ROPS lights...more to come...

  10. #10
    Veteran Member
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    Sep 2004
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    2,400
    Location
    Kansas, Butler county, Just east of DooDah
    Tractor
    Kubota L4200 GSTCA

    Default Re: hydro fluid? - not SUDT vs UDT!

    Quote Originally Posted by JOHNTHOMAS View Post
    Not 100% sure on this but I believe it's true.



    If there is no value in the difference, why does the factory buy and install the more expensive fluid?
    This is quite a leap
    going from not being sure to stating that the factory installs the most expensive....
    don't you think...?

    The SUDT being synthetic has been around since they first introduced it priced like a synthetic...
    And I do not believe they ship SUDT to Japan to put into new tractors... Most all dealers use what works in the tractors they sell... I am sure some only stock SUDT there fore when they top off a delivered new tractor they use it... MANY others use what they stock and it works fine... just like what might be in the machine from the manufacturing plant. They use what works and you can replace with whatever works for you that might even include a real synthetic ... or not. KennyV

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