We operate a Massey MF1533- circa 2005.. we acquired the machine in a property purchase and it had been sitting for years. We immediately changed the oil and 50 hours later, changed it again. It was under just under 200 hours on the clock at the time.. We then asked about the service interval and the confusion with the manual. The local dealer said - the recommendation is to change based on the indication of hours operated on the meter - not the hours since last change. "Our recommendation is that at that many hours on the meter, do the recommended service."
We put our machine on that schedule and we keep a log so we know when it was last done by date and hours. We have been doing it by the meter. We are at 308 hours at the moment and likely will change the oil today. It's raining again and a good day to do maintenance.
We are light user.. about 100 hours a year.. So yup, every spring we are changing oil..