I bought a new tractor in '07. The owners manual mentioned a special type of universal fluid and said that if you didn't use it you could expect problems. Since I still had 15 gallons of new "old style" fluid just sitting around, I got on the www to find out if and what was the difference in new and old.
Well there is and other than additional/different additives, it is a synthetic blend oil where the other was straight parafin based.
TSC has this new oil labeled as "Premium" UTF and it has some die in it. I remember Orange being the color of the dye to identify the new oil, but not sure. Read the label on it and the old type oil and you will know the difference.
If I had a JD and a JD dealer was close I would use that. But I don't have a JD and my dealer is not close so I look elsewhere.
I bought some synthetic UTF from Amisol for a DR lawn tractor/mower ZT hydraulic sump. When I bought the mower I had no idea as to how long the fluid would last and all. It sat on the shelf.
My tractor is 4wd and being new it has taken awhile for the 4wd shifter to go into gear easily....wear in. Some time ago, before I discovered the TSC oil, I was checking fluids and noticed my front axle sump which holds 2.5 gallons was low. I wound up putting 2 pints of Amisol in it to put it at the full mark. I didn't have any leaks and it's a sealed system so I guess the factory fill and the dipstick readings were two different things.
To my unexpected surprise, it wasn't long till the engagement was smooth as silk. I was impressed. Now what part of the oil caused that? I don't know but I do know that the lube properties of it exceeded the OEM oil and it is the newer kind of oil. Just an interesting (to me) occurrence.