Hydraulic/ Hydrostat oil?

[L47TLBwannabe]

What are people using for oil? I couldn't get a straight answer out of the dealer I just did my break in oil change for the engine and I'd like to replace the hydraulic and hydrostatic oil filters but I know I'll have to top it off but don't know what exactly to get. The excavators I run at work have AW32 oil full synthetic I believe. The dealer had told me to ask the guys at Piston Ring since that's where they bought it from but Piston Ring wasn't sure what the dealer had put in my tractor. I'll give them all heck on Monday (naturally) but I have some decent weather finally so I can do all my servicing before it gets cold again as I can't get in the garage door with how tall the cab is. lol

 

[aczlan]

Whatever you get, look for the Deere J20C, J20D, or the Kubota SUDT or SUDT2 rating.
Any of those should be fine for hydrostatic transmissions, wet brakes, wet clutches and other modern niceties.

Aaron Z

 

[XSKIER]

The performance of J20C hy-guard is terrible in cold weather. J20D is low-vis hy-guard, and is much easier to get going when things are less than 40°F. It blows my mind how one bucket of aftermarket oil can cover both. I can't say for sure about Kabota, I've not owned one long enough to consider a fluid change.

 

[aczlan]

The performance of J20C hy-guard is terrible in cold weather. J20D is low-vis hy-guard, and is much easier to get going when things are less than 40°F. It blows my mind how one bucket of aftermarket oil can cover both. I can't say for sure about Kabota, I've not owned one long enough to consider a fluid change.

Kubota SUDT is similar to JD J20C.
Kubota SUDT2 is similar to JD J20D.

Most buckets will just list Kubota UDT, Kubota SUDT and JD J20C.

Aaron Z

 

[BrkMstr]

Manual states: Transmission Fluid - DAEDONG: UTF55 or SHELL: Donax-TD or EXXON-MOBIL: Mobilfluid 424, Exxon Hydraul 560 or BP: Tractran UTH Capacity is 5.8 gals or 22.0 L...........

 

[aczlan]

Manual states: Transmission Fluid - DAEDONG: UTF55 or SHELL: Donax-TD or EXXON-MOBIL: Mobilfluid 424, Exxon Hydraul 560 or BP: Tractran UTH Capacity is 5.8 gals or 22.0 L...........

Looking at a couple of those, the Mobilfluid 424, Exxon Hydraul 560 and the Donax-TD all meet the Deere J20D and the Kubota UDT standards.
The Donax-TD claims to meet or exceed both J20C and J20D.

Aaron Z

 

[RandyT]

Looking at a couple of those, the Mobilfluid 424, Exxon Hydraul 560 and the Donax-TD all meet the Deere J20D and the Kubota UDT standards.
The Donax-TD claims to meet or exceed both J20C and J20D.

Aaron Z

Donax TD is now Spirax S4 TXM which is the same as the Rotella HD tractor transmission and hydraulic fluid. I believe it is considered a 10w30 multigrade hydraulic oil.

 

[aczlan]

Donax TD is now Spirax S4 TXM which is the same as the Rotella HD tractor transmission and hydraulic fluid. I believe it is considered a 10w30 multigrade hydraulic oil.

Interesting, Spirax S4 TXM claims to meet JD J20C, but not J20D and the page for it does not claim to meet any Kubota specifications.

Aaron Z

 

[NYCheese]

When I topped mine off after changing the filters, I used the 424, and haven't noticed any change in operation, even in cold temps. I'd heard others say it could make the HST "whine" a bit more in the cold, but I only needed about a gallon, so probably not enough to have much effect. When the time comes to change all of the fluid, I plan on using the Kubota SUDT2, as I've heard that it's one of the best in cold temps.

 

[RandyT]

Interesting, Spirax S4 TXM claims to meet JD J20C, but not J20D and the page for it does not claim to meet any Kubota specifications.

Aaron Z

The bucket of Spirax that I have shows J20C and doesn't show Kubota UDT. The bucket of Rotella HD tractor hydraulic fluid shows Kubota UDT and JD20A,B,C,D also mentioned on the Spirax bucket is it is 10w30 oil