Hydraulic fluid

[Slong1958]

I’ve got a L4400 and the hydraulic fluid needs changed and was wondering what fluid to use?

 

[TheOldHokie]

Short answer:

Read your owners manual.

Long answer;

Kubota recommends either their premium SUDT2 transmission oil or their regular UDT product.

SUDT2 is a superior formulation especially well suited to HST transnissions and strongly recommended by Kubots.

UDT is a conventional universal tractor transmission fluid (THF) better suited to gear drive machines.

For all practical purposes SUDT2 is unique but UDT is indistinguishable from a host of other THFs.

Let the fun begin.

Dan

 

[85Hokie]

" SUDT2 is a superior formulation especially well suited to HST transmissions "

Go ahead - "make my day" and use something else in the HST that other manufactures say "meet Kubota's hydraulic fluid specifications"

"A man's got to know his limitations!"

that's two Dirty Harry quotes...........

Reading between the lines.........

you will save a few bucks early and spend a hellva more lot later!!!!

 

[whatsupdoc]

Ok so let me throw this into the fire....
What say yee......


AI Overview


Amalie Ultra All-Trac 245 Synthetic Tractor Hydraulic Fluid is often cited as a direct, high-quality alternative to Kubota Super UDT2 (SUDT2)
. It is designed to meet or exceed the performance specifications required by Kubota for their hydrostatic transmissions and hydraulic systems.

Key Details on Amalie Equivalent to SUDT2:

• Product: Amalie Ultra All-Trac 245 Synthetic Hydraulic Fluid.
• Compatibility: Users have reported that this fluid is 100% equivalent to Kubota's OEM fluid, with some reports indicating that the chemical analysis and formulation are identical to the OEM-branded product.
• Performance: Like SUDT2, it is a full synthetic formula designed for extreme all-weather performance, providing superior low-temperature flow and high-temperature stability compared to standard UDT fluid.
• Usage: It is suitable for use in Kubota tractors requiring SUDT2, particularly to reduce HST (hydrostatic transmission) whine and improve performance in cold weather.

Other Potential Alternatives to SUDT2:

• Amsoil Synthetic Tractor Hydraulic/Transmission Fluid (THF): Often used in colder climates as a high-performance alternative.
• John Deere Hy-Gard (Low Viscosity): Some users prefer this as a high-quality alternative for cold-weather performance.

Note: While many users have had success with these alternatives, using OEM Kubota Super UDT2 is recommended to ensure warranty compliance

https://www.amalie.com/wp-content/uploads/2024/04/AMALIE_Ultra_All_Trac_245_Sell_Sheet.pdf

 

[ShaPow!]

And go here: https://www.orangetractortalks.com/forums/threads/hydraulic-fluid-options.36261/