My 1365 3 point hydraulics have a real problem when it's cold.  It's 15 out now and they won't move. I've let the tractor warm up about an hour and they still won't move. The 3 point works great in warm weather. I changed the oil and used hyd/trans oil and it looks like a milky white fluid.  I'm wondering if this is too thick for winter use. I've brought it in to my car garage for a while to see if they will work when warmed up. Wife will kill me when I start the diesel. Hope it works.  Any ideas are appreciated!