During fuel shortages and economic downturns, many vintage tractors featured clever all-fuel or distillate engines. These machines started on high-grade gasoline until the manifold warmed up thoroughly, after which the operator switched over to cheaper kerosene or tractor distillate. Dual fuel tanks and manifold heat shrouds remain iconic design features of that resource-conscious per... https://medium.com/@info.tractorfactory/the-most-reliable-old-tractors-ever-built-buyer-guide-6e8d6d4fc8fd