Garth G. Groff <ggg9y@...>
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Butane was a popular alternative fuel for large highway trucks in the west up into the 1950s. Most brands of trucks were available with an optional butane engine. I believe Hall Scott of Berkeley made many of these power plants. Why butane, I don't know. Maybe butane engines worked better at higher altitudes in the Sierras and the Rockies?
I've never heard of a butane-powered tractor, but it was probably tried at some point.
Garth G. Groff
Distillate was a regional, petroleum derived fuel which could be used in tractors.