udt vs super udt

[sw03]

Until I see a VOA and UOA, the new Super SUT is a ripoff. The SUDT for years was overpriced and pimped as it was the best. Now the new fluid is almost the same in price (but way better per dealers)...something smells wrong.

 

[BandDcabinet]

Even if the jug doesn't say, the safe handling paperwork always discloses the actual manufacturer.

Here you go. The MSDS from the Kubota Site.
http://www.kubota.com/assets/safety/pdf/msds/MSDS SUDT-2.pdf

Identifies source as Ashland. I didn't study in detail. I'm sure the "lubricant" experts already have or will.

 

[bp fick]

Here you go. The MSDS from the Kubota Site.
http://www.kubota.com/assets/safety/pdf/msds/MSDS SUDT-2.pdf

Identifies source as Ashland. I didn't study in detail. I'm sure the "lubricant" experts already have or will.

Yeah. That is been pretty well known.

 

[MHarryE]

Here is a document I got several years ago when I bought my old L3710, Kubota's explanation of the difference between UDT and Super UDT.

 

[PHILIP8N]

Here is a document I got several years ago when I bought my old L3710, Kubota's explanation of the difference between UDT and Super UDT.

Good information, thanks for sharing. Philip.

 

[Jay4200]

Jay, with that lag, how much additional wear to you feel you might be getting out of the hydraulic system??????

I did state in my earlier post of the differences between super and super 2 and for us here in NY the UDT to Super which is superior in the cold over UDT

Extra wear? Probably none. Definitely none on the hydraulic system - hydraulic systems don't actually 'wear', do they? I'd guess that any additional clutch wear is negligible. I don't know exactly why the lag exists, since I don't understand how the hydraulic clutch works, but I'd guess that it is a small orifice valve pushing the clutch plates together after a shuttle/gear change, and the cold fluid takes a bit to get moving. The clutch engagement itself isn't all that different, and the operation goes to normal pretty fast once things warm up. There is always a bit of a lag, unless the machine/hydraulics is/are roaring hot.

JayC

 

[sw03]

Here is a document I got several years ago when I bought my old L3710, Kubota's explanation of the difference between UDT and Super UDT.

Thanks and you are right. THis was done years ago. I remember this back in 2003. Again the hyd fluid has been a money maker for Kubota for years. Even there oil spec is nothing "strange".

For me, use Amsoil hyd and you know what you are getting.

 

[scootr]

I bought 2018 MX tractor. The manual calls for SUDT2 for 'enhanced' ownership. Whatever that means. With a footnote that regular UDT is also permitted in the machine too.
I wonder which fluid was put in it from the factory, as I broke a fitting and want to add a gallon or so. My guess would be the regular (less expensive) UDT.

 

[ROUSTABOUT]

just did the 400 hr change on the l2500 and when i ask for super udt I was told they do not carry it- said it was mostly used up north in the cold temps-what is the diff between the super and std udt--------curious

Well, I live in the south. Worked at Kubota. They do sell it down here.

 

[ROUSTABOUT]

UDT = 20w hydraulic oil
SUDT = 10w20 hydraulic oil
SUDT2 = ? I've heard it's still 10w20 and is a synthetic blend but I haven't seen it in writing as of yet. The bottle does say that it has "synthetic performance" but it doesn't come right out and say it's synthetic or a blend.

SUDT2 is replacing SUDT so you can expect to see less and less of the SUDT.
(my local dealer carries UDT & SUDT2)

As been pointed out, SUDT (and perhaps SUDT2) has better numbers/ratings in high heat and low cold conditions which would presumably indicate it's a better all around hydraulic oil but, people have been using UDT for decades without issue or performance loss.
So it's basically six of this and a 1/2 dozen of the other

The above doesn't include an info on Canadian Kubota fluids or other manufacturers' hydraulic oils

clear as mud?
Dave

SUDT doesn't cavitate and foam like UDT. Burn a couple of skid steers down and you'll figure it out.