Kubota’s manuals call for Kubota Super UDT2 (the BX manual’s fluid table lists “KUBOTA SUPER UDT-2 fluid”). Genuine part numbers are 70000-40201 (1 gallon, $40.77), 70000-40202 (2.5 gallon, $94.79) and 70000-40205 (5 gallon, $138.38) at Messick’s on Oct 20, 2026. Kubota says Super UDT2 is fully interchangeable with UDT and Super UDT. Several other makers list “Kubota UDT” compatibility on their own sheets, but we found no Kubota approval of any aftermarket fluid, and none of those sheets we checked names Super UDT2 except TRIAX’s Supreme page.

• “Multi-purpose all-weather hydraulic fluid,” recommended for the hydraulic, final drive, transmission, differential and wet brake systems.
• “Fully interchangeable with standard UDT and Super UDT fluids.”
• Kubota’s FAQ: “approximately 75% synthetic.” Messick’s labels the 5-gallon pail “Full-Synthetic,” so the two do not match.
• Typical properties listed by Kubota: 37 cSt at 40°C, 8.1 cSt at 100°C, viscosity index 199, maximum pour point -42°C.
• For “reliable, long lasting performance,” Kubota says to “choose Kubota Genuine Products.”

Kubota’s page does not state an API GL-4, John Deere J20C or other industry rating for Super UDT2. Older versions of this page listed those as Kubota specs, and we could not source them, so we removed them. This means we cannot give you a spec to “match” on a label.

Pick one product and use it for the whole fill. We found no Kubota guidance on mixing Super UDT2 with other brands, so draining and refilling with a single fluid is the cautious route. If your tractor is under warranty, ask your Kubota dealer first.

Super UDT2 description and part numbers come from Kubota USA’s lubricants page and FAQ. Prices come from Messick’s Kubota fluids catalog (Oct 20, 2026). Aftermarket claims come from each maker’s own product page or data sheet. Capacities and intervals come from Kubota-authored operator’s manuals hosted by third parties (ManualsLib and a Kubota PDF host), with printed pages where verified. Confirm with your Kubota dealer before you change fluids.

🔧 Which hydraulic or HST filter does your Kubota use? See our Kubota Hydraulic Filter Cross-Reference for the right filter number by model, service intervals from Kubota’s manuals, and which parts are cleaned versus replaced.

🔧 Need the right filter? Use our Kubota Filter Cross-Reference Chart to find the verified oil, HST and hydraulic filter numbers for your model, with supersessions and aftermarket matches.

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