This is my 02 F-680 with the optional (MCS) materials collection system off it also has dual tail wheels, 750hrs when the original Kohler blew, I repowered the mower, and now have 1,750hrs. With proper maintenance; contrary to the BS posts regarding how a diesel will out last a mower frame & deck, thats untrue, I have a problem with wearing out engines first. I have since switched to AMSOIL on the second Kohler and all equipment, with great sucess. Pictures don't lie this 7-Iron has been worked hard, John Deere uses some high quality steel in thier decks. These are pictures after sitting since November of 07 in my storage unit, I do use FF on the underside of all my decks. The Stihl hedge trimmer is a HS81R it's a monster, also my RGB bladesharpener station.