I have the Tuff Torq T 40 transaxle in my little JD LA110. It was pretty tired so I went through it last year and replaced the pump and motor and changed to the 5w50 sythhetic like Tuff Torq recommended. It worked like a champ for the last two seaons. Well, now it seems to be starting to slow down a little, so since the rest of the mower is in great shape I want to try another transaxle. Are there any other choices that would be a little more robust? I found a brand new K46 on ebay for $325.00, its out of a unit that was damaged during shipping. It looks physically the same, will it bolt right in? And is this a better transaxle? One more question, has anybody tried using hydraulic fliud in place of synthetic engine oil in their transaxles?