Twelve year old John Deere L130 riding mower. Family had several JD mowers over the years, really well built and good service. This one was a great mower when new, Kohler twin purrs, mows excellent, easy service. Then at just under 300 hours the hydro starting wasting away. I then learned about the Tuff Torq throwaway transaxle. Powered metal differential gears, gears and hydraulics running in the same oil that gets full of steel particles from those gears. Took it apart, cleaned out the shrapnel and filled with thicker oil. Got another 200 hours out of it. Replaced with a Peerless unit with separate units, and going good at near 700 hours now. Never, ever buy any mower with the Tuff Torq non-serviceable hydrostatic transmission. And just about all lower priced (and higher priced sometimes) have that unit under the back end.