I'll have to post(if this thread is still around:0) at the end of this mowing season for my new ZTR, since it's my first full season of mowing with it. I'm also curious to compare it to my maintenance log for my previous mower(2006 Craftsman YS4500 54" deck lawn tractor) because I did maintenance at the beginning of every season on it so I'll be able to get an average hours/year over a 6 year period. Now.....just to remind myself of this later on at the end of the summer(you do know that the memory is the first thing to go when you get old and I can't remember what the second thing is:0)