RUMELY Oil Pull Primitive Tractors (w/ slomo)

Interesting old Rumley Oil Pull tractors. These ran on all types of kerosene instead of other types of fuels like gasoline or diesel. The engines had a huge displacement and some had pistons 10“ in diameter and a 12“ stroke. I tried to find some details about these, and found limited specifications about them. They used oil instead of water for cooling because the engines needed to run much hotter than gasoline engines to ignite the kerosene. The engines are often started on gasoline, then sw