Yeah, I was wondering about the hydrostatic tractor fluid. I was talking to my Kubota mechanic about the fluids I should use in my new tractor. He comes to my house and does all my regular maintenance like oil changes and other general things that need to be done on a regular basis. I asked him if I needed to use Kubota's high dollar lubricants if I wanted it to last a long time. He told me as far as motor oil was concerned to use a good quality oil that is in the correct weight range and specs, and I would be good. But he did say it would be best to use Kubota's brand in the Hydro fluid. He didn't say why he just said there is something in their oil that those Hydros liked. I have about 40 more hours to go before it needs to be changed and have a couple other things that need to be checked and was wondering if I really needed to use their hydro fluid. When he comes buy to do regular maintenance things he goes away from here with between $450 and $500. I know I could do it cheaper doing it myself just not sure about the transmission fluid.