"Universal" Tractor Fluid - Depends on your transmission type?

[kpsp50]

I have to agree with 5030 I bought my Exxon Mobil 424 hydraulic fluid off of eBay delivered to my door stick with a manufacturer's recommendation

 

[5030]

I use Chevron All Weather TCF synthetic in both my Kubota's and it's actually more costly than Kubota SUDT. I get it from my jobber and it exceeds the Kubota published standard for fluid too. Because I use my tractors in the dead cold of winter, cold flowability is very important to me and the Chevron flows better in the frigid temps than the SUDT does.