Here is something I was thinking about while I was working today. I have 2 large tractors a 2007 John Deere 4120 and a 1980 John Deere 2040. Both are 40+ Hp tractors. The 2040 gets a fuel efficiency of 1.3 gallons per hour. The 4120 gets a fuel efficiency of 1.2 gallons per hour. These machines make me between 125 and 150 per hour and as high as 200 per hour. My question is why in the heck does my SCAG with a 24 hp brigs only get a fuel efficiency of 1 gallon per hour? Seems like it would use a considerable amount of fuel less. Granted it is gas and the big tractors are diesel. What do yall think?