Thanks for answering John.  My tractor set inside my warm garage for around 1 1/2 hours after being out in 10 degrees +-.  When I started it inside the 3 point worked like a charm and I had no problems with it outside working for 2 hours.  I hear no noises when operating the 3 point. My thoughts are to drain all the hydraulic oil and replace it.  My book doesn't seem to state exactly what oil to use although 10W-40 was mentioned. The shop manual I bought from Iowa states using Hydraulic/trans oil.  How can I get all the water out?  Will just draining and refilling work?  And I wonder how it would have got in there? Condensation?  Thanks for getting back so quick.