No argument here on Diesel vs. Gas, I wish it were a diesel. But back in the day when these tractors were made diesel fuel was not as readily available as gasoline at most fuel service stations and such. A lot of old farmers wer completely powered with gas engine equipment, now your lucky to find a gas engine on your bigger farms. For sure diesel would be the way to go, but this is the one grandpa bought years ago and it's gas, sorry.