Thanks, Thought about taking it apart and seeing if there might be something wrong. Don’t think so now. Am going to change fluid and just run it. It has been setting for some time.. (3 maybe 4 years)I've got Royal Purple 75-90 in most of mine. The whine is pretty much standard equipment. When I first got in the the green garden tractors the guys all told me ya only need to worry if it doesn't whine!