FYI for those interested. We have a 2006 SCAG TT 61 advatange deck with 29 LC/EFI kawi. I put exactly four hours on the mower today and consumed 5.5 gallons. Basically got 0.7 gallons per hour. I had super high lift blades on the machine with the rear soft bagger/side saddle attached. Did 9 lawns that average out to about 0.75 acre mowable. I side discharged two of the nine lawns. Lots of leaves and the first three accounts were VERY wet. Two of the accounts have significant hillsides to traverse. All in all I'm still impressed with the fuel consumption. I'm going to try and remember to calculate tomorrow and again without the bagger and super high lifts to see what type of difference the high lifts are giving me in fuel consumption.