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Kubota UDT, Super UDT (obsolete?) or Super UDT2? #4804372
07/03/18 07:24 PM
07/03/18 07:24 PM
Joined: Dec 2016
Posts: 63
Soonerville
379KITTY Offline OP
379KITTY  Offline OP
Joined: Dec 2016
Posts: 63
Soonerville
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My question is this: From what I can find online, Super UDT is obsolete and superceded by Super UDT2.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.


79 Broncos-3
77 Vette
72 Cheyenne Super
75 Torino
77 F150 SB 4x4
96 Chevy Z71 SB EC
95 GMC Z71 SB EC
02 GMC Safari
05 Chevy Cobalt
92 F250 4x4
05 Roush F150
11 Equinox
96 Pete 379
Fountain twin 502's
Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4804729
07/04/18 08:09 AM
07/04/18 08:09 AM
Joined: Apr 2009
Posts: 223
Reno, Nevada
Langanobob Offline
Langanobob  Offline
Joined: Apr 2009
Posts: 223
Reno, Nevada
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
07/04/18 05:55 PM
Joined: Jun 2002
Posts: 6,354
MI
doitmyself Offline
doitmyself  Offline
Joined: Jun 2002
Posts: 6,354
MI
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
07/05/18 08:54 AM
Joined: Jul 2004
Posts: 98
Indianapolis, Indiana
philipsearcy Offline
philipsearcy  Offline
Joined: Jul 2004
Posts: 98
Indianapolis, Indiana
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
07/05/18 05:46 PM
Joined: Dec 2016
Posts: 63
Soonerville
379KITTY Offline OP
379KITTY  Offline OP
Joined: Dec 2016
Posts: 63
Soonerville
Thanks for all the replys. I think the SuperUDT2 is what I will go with - appreciate the info.


79 Broncos-3
77 Vette
72 Cheyenne Super
75 Torino
77 F150 SB 4x4
96 Chevy Z71 SB EC
95 GMC Z71 SB EC
02 GMC Safari
05 Chevy Cobalt
92 F250 4x4
05 Roush F150
11 Equinox
96 Pete 379
Fountain twin 502's
Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4819488
07/21/18 09:00 AM
07/21/18 09:00 AM
Joined: Aug 2015
Posts: 33
Rocky Mountain West
smokingun45 Offline
smokingun45  Offline
Joined: Aug 2015
Posts: 33
Rocky Mountain West
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
07/22/18 07:24 PM
Joined: Dec 2016
Posts: 63
Soonerville
379KITTY Offline OP
379KITTY  Offline OP
Joined: Dec 2016
Posts: 63
Soonerville
I may just do that. Bought 10 gallons of SUDT2 but it will live in those pails longer than I will.


79 Broncos-3
77 Vette
72 Cheyenne Super
75 Torino
77 F150 SB 4x4
96 Chevy Z71 SB EC
95 GMC Z71 SB EC
02 GMC Safari
05 Chevy Cobalt
92 F250 4x4
05 Roush F150
11 Equinox
96 Pete 379
Fountain twin 502's
Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4868296
09/14/18 05:13 AM
09/14/18 05:13 AM
Joined: Sep 2013
Posts: 10,472
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,472
Indiana
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 200k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 149k Rotella T5 10w30 Supertech ST3980

Re: Kubota UDT, Super UDT (obsolete?) or Super UDT2? [Re: 379KITTY] #4868386
09/14/18 08:27 AM
09/14/18 08:27 AM
Joined: Jun 2002
Posts: 6,354
MI
doitmyself Offline
doitmyself  Offline
Joined: Jun 2002
Posts: 6,354
MI
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
09/14/18 03:28 PM
Joined: Sep 2013
Posts: 10,472
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,472
Indiana
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 200k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 149k Rotella T5 10w30 Supertech ST3980


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