Anybody know who makes Deere's hydrostat oil these days? Way back when, Mobil used to have the contract. They still advertise Mobilfluid meeting Deere's spec J20D, but Deere does not publish a list of approved suppliers.
It's anyone's guess who makes the current product. In Canada I have seen Hygard sds's from Imperial Oil and in the U.K.from Shell. Never saw any from Mobil.
Northland Oil makes the John Deere oil as far as I know. Somehow I figured that out when I worked in a John Deere factory but don't remember how. I think Northland might be puppet of Deere.