Oil & Fuel 50 hrs is coming up fast. Flush???

[IndyIan]

I'm finding that I will put 3-4 hours on it then go a week without using it. She certainly gets up to temp in that time. In about 2 weeks time I will be done my spring work and she will sit for a few months. Then I will have a bunch of work in the fall for it. I don't mind using synthetics on the engine. It's cheap.
The hydro, I may just use Donax Td. It's easy to get around here and 1/3rd the cost of synthetic. Correct me of I am wrong but the hydro oil wouldn't see the temps that the engine would. Is that a good assumption?

I don't know how hot the hyd. oil gets if your not doing ground engaged work? I assume your tractor has a hyd. cooler so I think you'll never over heat it anyways. I put shell spirax s4 txm(Donax replacement) in for my 50hr service but I find its a bit noisier from the gears than I remember the factory fill being... HST seems the same but next change I think I will try something else. My dealer uses valvoline tractor fluid so I might go with it next time.