Changing Transmission Oil

[slomo]

Keep in mind that hydro fluid is hotter than engine oil.

I'm all ears. Please explain.

A fluid is a fluid is a fluid. The additive pack in motor oil or even the base of it will reach the same temp in said system as regular hydro oil. What did I miss? Thin or viscous at 212F is just that.

 

[Skippydiesel]

I have just replaced the stinking mess (oil) that came out if a Tuff Torq K46 V with full synthetic, Penrite HPR 10, 10W-50 motor oil. No word from the customer at this time but hope it will give the, 30+ year old , mower a few more operating hours.