</font><font color="blue" class="small">( Since it's a hydro I don't see how it should matter. The ranges are just there so it is easier to get the speed you want.)</font> Using a hydro, as far as ranges go, is really no different than using gear. Think of the hydro as a throttle and if you're in high range, you still don't have the pulling power that you have with low range. When you press the HST "throttle" in high gear, you get a temporary lug down and then a catch up of engine power if you give it all at once. Would be the same with a gear in high range and giving full throttle. Low or mid range would be much better so as not to put a strain on the entire tractor. I think it's something that the tractor will let you know pretty quickly, if one is paying attention. John