Early old tractors operated predominantly on gasoline, kerosene, or low-grade distillate fuels before diesel engines became standard. These multi-fuel systems allowed farmers to start cold engines on volatile gasoline before switching over to cheaper fuels once warmed up. This fuel flexibility was crucial during economic downturns, allowing farmers to run machinery on whatever afforda... https://medium.com/@info.tractorfactory/the-evolution-of-the-american-farm-the-old-tractor-story-460ce19fc875