That is a generic UTTO equivalent to Kubota UDT and John Deere Hygard (J20C).
The Canadian "Premium UDT" and the US "SUDT" or "SUDT-2" are completely different fluids. Premium UDT is a conventional low viscosity mineral oil based fluid made by Shell Canada for Kubota Canada. That is straight from the MSDS. Oddly, despite the fact it is a conventional oil, the pour point is even lower than that of SUDT-2.it can get dang COLD on Lake Superior, so please buy the Kubota 'premium UDT' ( south of 49th they call it SUDT.....)
No it doesn't. Read it again. I bet it says something like "Suitable for use in..."I use the tractor supply stuff which does say kubota UDT aproved, but I dont have a HST, If I did I would only use kubota fluid
Absolutely NOT!Is this oil suitable for my 2002 l3710 HST??
With all due respect thats picking nits.No it doesn't. Read it again. I bet it says something like "Suitable for use in..."
Kubota does not "approve" any fluid but their own, and they are pretty secretive about their specifications so other manufacturers can't even claim their products "meet Kubota specifications".
With respect, I don't believe it is picking nits. To quote the Standards Division with the North Carolina Department of Agriculture and Consumer Services, “the lack of any specifications does not provide the purchaser with information for its intended use, nor the ability to test the product for meeting those specifications.”With all due respect thats picking nits.
Mobil 1 10w30 is a different formulation than Castrol GTX 10W30 but in the same grade and API service class they are interchangeable. They meet the same basic specifications.
If you can mix milk and honey and come up with a 9 cSt hydraulic oil with GL4 gear oil performance you are an alchemist.With respect, I don't believe it is picking nits. To quote the Standards Division with the North Carolina Department of Agriculture and Consumer Services, “the lack of any specifications does not provide the purchaser with information for its intended use, nor the ability to test the product for meeting those specifications.”
Now, they were specifically referring to the so-called "303" or "yellow pail" fluids marketed as budget tractor hydraulic fluid. These fluids claimed to meet John Deere specifications when in fact they were claiming to meet a a spec abandoned 50 years ago (and actually didn't even meet the obsolete standard). They have been shown to damage HST tractors.
To extend your analogy, it is like slapping a label that states "meets Ford specifications" on a bottle of straight 30 weight non-detergent motor oil and putting it on the shelf beside the Mobil1 and Castrol GTX. Yes, all three might have similar viscosity at a given temperature, and yes, all three will work in your Model T, but that's where the similarities end. Things won't end well if you use it in your F150.
The reason we know the Mobil1 and Castrol GTX oils are interchangeable is because -- as you correctly pointed out -- they are tested and proven to meet the same specifications. Not just physical properties, but all aspects. They might use different additive packages, but they achieve the same goal in the process.
Marketing phrases like "Suitable for use where Kubota UDT is specified" or "Approved for use in Kubota tractors" (Approved by who, exactly?) tell us nothing about the product since there is no published Kubota specification.
In the case of the OP's Walmart pail, the label indicates "SuperTech recommends Universal Tractor Fluid in the following applications:..." (none of which are Kubota UDT)
Note carefully the weasel words. No where do they state it actually meets the specifications that follow them. Very much like the wording on the yellow "303" buckets that were banned from sale in some jurisdictions.
I could mix milk and honey and come up with a hydraulic fluid with a viscosity of 9 centistokes at 100°C. Doesn't mean I should use it in my tractor.
For interest sake, I attach a chart I compiled comparing the physical properties of various name-brand tractor transmission hydraulic fluids. It is interesting to see the wide variation.
Hmmm. No I won't. Forum software does not allow Excel files. Well here it is if you want to download it: Comparison Chart.
As do thousands of other equipment owners. Go read this John Deere blurb. According to them JD Hygard is the only thing you should use in JD equipment. Why? Bercause it undergoes more tests than competing formulations. Shades of Spinal Tap and their special guitar amplifier with a volume knob that goes to 11.@torch no disrespectf and I could have used better terminology knowing that this was going to turn into one of the infamous "oil threads" so I stand corrected in that nature. I did miss readthe label on what I use and I took of a picture of it this morning that further confirms your original suspicions of my statement if you zoom in you can see that it says "reccomended for the following applications" and it lists standard kubota UDT as well as kubita trans/hydraulic fluid (w/e) that is.
I'm sure that label isn't printed willy nilly becuase it could invoke some serious lawsuits of it was.
Ah, but I didn't claim it would meet GL4 -- just that it would have the right viscosity at that one specific temperature. Even plain water is a "hydraulic fluid", right?If you can mix milk and honey and come up with a 9 cSt hydraulic oil with GL4 gear oil performance you are an alchemist.
There are no industry standards for UTTO or hydraulic oil but there are dozens of industry standard tests authored by API, SAE, JIS, ASTM etc.
You are correct that the requirements for an HST system are less than required of a gear drive tractor. And virtually any fluid can act as a hydraulic fluid insofar as being incompressible and pumpable. Not all fluids are compatible with all seal materials and some fluids are better lubricants than others.If I was doing more then running a hydraulic pump for hydraulic rams etc and didn't have a gear trans I would only run the actual kubota fluids since the HST'S are very expensive to fix and the juice wouldn't be worth the squeeze so to speak.
I have friends in high placesInteresting chart, BTW. That is the first time I have ever seen something from Kubota specifying their requirements. Very useful. Where did you find it?
Right onWe can be sure that Walmart does not make the oil they sell. Their business model is to buy it from the cheapest possible source. It may even be that the source could pass the required tests but chose not to pay for the testing to keep the price low. We don't know.
I find it fascinating that apparently Kubota's fluids don't fully meet that spec.I have friends in high places
I have posted that chart (my creation) before along with this link.
Development of High Performance Transmission/Hydraulic Fluid (KUBOTA Super-UDT) Establishing the Specification and New Test Method
An agricultural tractor is a machine that performs many operations, such as land preparation, cultivation, towing and PTO operation, to name a few. In Japan it must operate in a wide variety of agricultural applications, such as paddy farming, upland farming, fruit farming and dairy farming, and inwww.sae.org
My UDT data is the is from 1998 and that difference in KV100 viscosity is not significant.I find it fascinating that apparently Kubota's fluids don't fully meet that spec.
Comparing your chart to the published physical properties that I was able to find online, the viscosity of SUDT-2 @ 100°C spec is >=8.8cSt but the published value is 8.1cSt. The viscosity of UDT @ 40°C is supposed to be <=55cSt, but the published value is 60cSt.
I wonder if the spec was changed over time? Or if manufacturers just could not meet the full specification? The only two fluids that appear to meet or exceed the SUDT-2 spec for viscosity are Chevron All-Weather THF and Co-op Super T-HF SB. I have no idea if they meet the other criteria however.