On the dipstick the oil is clean, no sign of milky discolored oil.
the tractor always is stored inside and the shifter boots are in good condition.
moisture would come from the housing sweating, but I was just concerned that moisture could buildup over a long period of time.
this is the only time of the year that I am not using it at least ever few days, so I thought it might be a good time to drainout a bit an check for water.
Might drain and change the trans/hyd fluid this year as it has been at least 5 years since it was changed.