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Kubota UDT, Super UDT (obsolete?) or Super UDT2? #4804372 07/03/18 07:24 PM
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379KITTY Offline OP
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Any advice appreciated. Bought a Kubota L2800 HST 2010 model new in 2011. Finally hit the 50 hr service mark - oil change, hydraulic oil change and front diff lube change including filters. Did the engine oil last yr at 40ish hrs - used Delvac 5w-40 and Kubota filter. For hydraulic oil I can't get/find a clear answer as to what is best. This is a barn queen my kids will likely inherit, so a little more $$ on better fluid is fine, as it will be in there awhile. Dealer (as of last year) ONLY stocked UDT, when asked about Super UDT said "not needed - we don't stock" and "only need to change the filter at 50 hrs - not the fluid". This doesn't coincide with owner's manual, which also lists UDT and Super UDT as appropriate.

My question is this: From what I can find online, Super UDT is obsolete and superceded by Super UDT2. Which leaves the only avail per owner's manual as UDT. Also read that Super UDT2 is synthetic/lowerviscosity/superior. Not sure if any or all is correct.

Certainly willing to get the UDT2, but for the $150 or so cost I'd like to be sure it is correct spec for older 2010 L-series machine. I think it was created for the high RPM BX series.

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4804729 07/04/18 08:09 AM
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Langanobob Offline
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Check in at tractorbynet.com, there are plenty of Kubota trans fluid discussions there. I donít have a Kubota but I have the impression that the latest and greatest synthetic SUDT2 or whatever itís called is definitely the way to go if you operate in very cold conditions or severe service. Canít imagine that itís not suitable for your 2010 tractor but you can confirm it at tractorbynet.

Last edited by Langanobob; 07/04/18 08:12 AM.
Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4805237 07/04/18 05:55 PM
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doitmyself Offline
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Tough decision. Opinions are all over the place. The crew at orangetractortalks forum seem to be all goo goo eyed and in love with the Super UDT2 fluid, even for L series tractors. As already stated, if you are in a cold climate, the choice for the UDT2 is easily supported. Maybe see if you can get in touch with a knowledgeable person at the huge Pennsylvania based Messicks and see what their opinion is. They might have some compelling evidence to sway you towards the UDT2.

Good Luck!!!

EDIT: 50 hours in 7 years is remarkably low usage. I put a very low 100 hours/year on my workplace tractors and I adjust my maintenance schedules to consider both hours and time. I find that in my climate, after about 6 years or so I begin to see a bit of moisture in my UTF's. John Deere recommends 1200 hour UTF changes on our bigger tractors. I change them around 600 hours.

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4805552 07/05/18 08:54 AM
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philipsearcy Offline
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Per Kubota's website, Super UDT2 is 'ēFully interchangeable with standard UDT and Super UDT fluids'. So Kubota now recommends that you use UDT or Super UDT2 in your L2800 HST 2010/2011. There is no truth about Super UDT2 being created for the BX. Philip.

https://www.kubotausa.com/parts/kubota-parts-products/lubricants


'03 Mercury Sable, '04 F250SD 5.4, '08 Honda Fit 1.5, '13 Honda Pilot, '50 Ford 8N tractor, '09 Kubota L3940 Tractor, '13 Kubota GR2120 Tractor
Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4806077 07/05/18 05:46 PM
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379KITTY Offline OP
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Thanks for all the replys. I think the SuperUDT2 is what I will go with - appreciate the info.

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4819488 07/21/18 09:00 AM
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smokingun45 Offline
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On my Kubota I,too,changed the fluid and filter at 50 hrs. The hydraulic flui was perfectly clear. If I had to do it over again I would just change the filter.

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4820704 07/22/18 07:24 PM
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379KITTY Offline OP
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I may just do that. Bought 10 gallons of SUDT2 but it will live in those pails longer than I will.

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4868296 09/14/18 05:13 AM
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dlundblad Offline
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Sorry for being late to the races, but is there any issues with a generic hydraulic fluid like Super S 303? $15 for 2 gallons at TSC.


03 Jeep WJ 4.0 202k Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 158k M1 EP 10w30 Supertech ST3980 (Ecore)

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4868386 09/14/18 08:27 AM
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doitmyself Offline
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Today's hydrostatic tractor transmissions claim to be very sensitive to proper fluid selection. Many people are cautious to take a risk on such an expensive investment. And, there are fewer "guinea pigs" testing alternative fluids like we find with automotive transmission fluids and coolants. 303 is a very old specification. The Super S 303 product sheet says it is not suitable for any tractors built after 1974: http://www.smittysinc.net/userfiles...uperTrac_303_Tractor_Hydraulic_Fluid.pdf

Also, respected member Jim Allen reported a VOA here on one of the farm store universal fluids and was disappointed because of the low additive levels.

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: doitmyself] #4868769 09/14/18 03:28 PM
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dlundblad Offline
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Originally Posted by doitmyself
Today's hydrostatic tractor transmissions claim to be very sensitive to proper fluid selection. Many people are cautious to take a risk on such an expensive investment. And, there are fewer "guinea pigs" testing alternative fluids like we find with automotive transmission fluids and coolants. 303 is a very old specification. The Super S 303 product sheet says it is not suitable for any tractors built after 1974: http://www.smittysinc.net/userfiles...uperTrac_303_Tractor_Hydraulic_Fluid.pdf

Also, respected member Jim Allen reported a VOA here on one of the farm store universal fluids and was disappointed because of the low additive levels.


Yeah I missed that 1974 disclaimer. Lol.


03 Jeep WJ 4.0 202k Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 158k M1 EP 10w30 Supertech ST3980 (Ecore)

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4917260 11/07/18 03:43 AM
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JMK Offline
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I just posted this in another thread:


I own two Kubotas a BX2370 and a L2501, I run 80-90 synthetic in the front diff, Rotella T6 5-40 in the engine. The hydraulic system I DO NOT run sudt2, the salesman and two mechanics told me to run this, it specs the same as the Kubota fluid (they wouldn't /couldn't) tell me who actually bottles the Kubota fluid. I set a email to this company asking if it was 100% truly sudt2 approved. He replied absolutely 100% that is. He then sent me the full msds and chemical analysis of his oil and the bottled Kubota oil. They were 100% identical and he stated when they are blended there is nothing different as they come off the line. <hint #1, he said they do get put in different colored jugs <hint #2, one last thing the said is that if you were to have a fluid related failure you will be 100% covered as this is the factory fill <hint #3. I flat out asked him if they supply the Kubota fluids. In very plain in company speak he said, "I can't tell you if we do also I can't tell you we don't."
I believe this it the supplier of the Kubota fluids.

Amalie Ultra All-Trac 245 Hydraulic Fluid - 4/1Gal case https://www.amazon.com/dp/B008QDHAN8/


Nothing of value or worth reading will ever occupy this space.
Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4941575 12/02/18 01:28 PM
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Jmoney7269 Offline
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Valvoline blends kubota super UDT2


Good bbq ain't cheap and cheap bbq ain't good!
Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: Jmoney7269] #4942714 12/03/18 06:14 PM
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dlundblad Offline
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Originally Posted by Jmoney7269
Valvoline blends kubota super UDT2


Where did you find this at?


03 Jeep WJ 4.0 202k Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 158k M1 EP 10w30 Supertech ST3980 (Ecore)

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: dlundblad] #4943776 12/04/18 10:59 PM
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Jmoney7269 Offline
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Originally Posted by dlundblad
Originally Posted by Jmoney7269
Valvoline blends kubota super UDT2


Where did you find this at?

Very first pdf...... plain as day listed to the world
https://www.google.com/search?q=kub...&sourceid=chrome-mobile&ie=UTF-8
[Linked Image]


Good bbq ain't cheap and cheap bbq ain't good!
Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4943782 12/04/18 11:13 PM
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Jmoney7269 Offline
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Here is the SUPER UDT2 equivalent from a well known blender called VELOCITY. It's a case/new holland blended oil and is very good
https://www.pli-petronas.com/uk/pro...n-lubricant/petronas-ambra/ambra-multi-g
[Linked Image]


Good bbq ain't cheap and cheap bbq ain't good!
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