Just bought my 2nd Super Z last week, a 28 EFI 60" with mulching deck. My old machine, a Super Z w/27hp 52" mulching averaged about 2-3days between fillups. So far the new machine has gone 2 days and is still on the first tank! Granted, it's been extremely dry here (no rain for over 2 months) with little growth to actually mow but this thing seems unreal. Can I expect this type of gas mileage all the time???? BTW what a sweet machine this is, I'm one happy camper!