kubota b6100

I parked my B6100 after about 2 hours of mowing and noticed a large puddle of Hydraulic oil had leaked out from the the PTO shaft on the tractor. I checked the dip stick and it was dry. I use a Woods finishing mower. Did I blow a seal? How costly is this to repair?

Would a Kubota B6100 (16 hp) be suitable for mowing 5 acres ? I have 4 acres of horse pasture and a 1 acre yard. This tractor has a 48" belly mower which would be good for the yard. I would like to have a 4-6 foot bush hog for the pasture. The yard would be mowed weekly and the pasture 1-2...

Does anyone happen to know the rated three point lift capacity for the B6100E?