JCB 1400b, wont move..help!

[outonit]

Its a friends hoe and has sat for a year, started it up and movd it fwd and back several times, went about 50', got out to do something got back in and then nothing.
The f/r selector is functioning along with the relay, fuses are all good, hear the selonoid on the trany clicking F and R respectively. Tried all gears, pbrake is released and it doesn't even hint at moving either direction...
The trany fluid on the dipstick is milky and well above full not sure what accounts for this? TC problem? Can coolant reach the trany somehow? still hoping for a simpler elec prob...is it possible that the selonoid valve is not fully closing in either dir?
Any help is greatly appreciated!

 

[outonit]

Well...drained the trany milk, cleaned the screen (clogged), added a little leak stoprefilled and away Joe rolled! Guess Ill likely have to deal with the coolant intrusion again soon, maybe.

 

[Delmer]

Coolant or rain water/snowmelt intrusion? You can send an oil sample in and they can tell you if there's glycol, or let the old oil settle then smell/taste the water to see if it's sweet or see what the freeze point is.