A place I do some work for has a grey fergy. God knows how many miles and hours she's done but plods on. They also have a massy with about 8000 before the clock broke and i recon i put on another 2000 hours and she's still as sweet as a nut. Mogs has about 900hrs and 10,000km

depends what work they do. Mogs having chippers on will usually have an easier life than a haulag mog.