distillate fuel
This is a good reference to some of the fuels used in the early to mid 1900`s... hope this helps with your question. It seems like the general trend is to mix 50/50 of gas and diesel to get distillate. You have to make your own since it is no longer available.
Bruce
Diesel
Diesel fuel first started appearing in large agricultural crawlers in the 1930s, but it was not until the 1950s that diesel became a major fuel source for farm tractors. Difficult starting limited the use of early diesel engines. Some manufacturers built spark-ignition diesel engines, or engines that started on gasoline and were switched over to diesel. Others used small gasoline "pony motors" to warm and start the diesel main engine.
By 1960, diesel engines had greatly improved and were becoming very popular for large farm tractors. By the 1970s, nearly all farm tractors used diesel engines.
Kerosene
Kerosene was commonly used as a tractor fuel in the early part of the 20th century. Like tractor-fuel, it was used in "all fuel" engines after the engine had warmed enough to allow efficient combustion of the kerosene. Cheaper gasoline after World War II, plus the onset of diesel engines, caused kerosene to disappear as a tractor fuel.
Tractor-fuel/distillate/TVO
Known as tractor vapourising oil or distillate, this once-cheap fuel was commonly used in farm tractors until World War II. Many manufacturers built low-compression "all fuel" engines designed to burn tractor-fuel, gasoline, or kerosene. The engine was started on gasoline from a small tank, and switch to tractor-fuel once it was warm.
Tractor-fuel was a low grade fuel produced between gasoline and diesel in the traditional
distillation of crude oil. The refining techniques developed during World War II made it possible to convert this into more useful fuels, and it began to disappear,
A tractor-fuel engine can be run on modern gasoline. The lowest grade of gasoline available today is often better than the highest grade available when these engines were built.