Editing Tractor (section)

==== Gasoline and kerosene ====
Since the turn of the 20th century, [[internal combustion engine]]s have been the power source of choice. Between 1900 and 1960, [[gasoline]] was the predominant fuel, with [[kerosene]] (the [[Rumely Oil Pull]] was the most notable of this kind)being a common alternative. Generally, one engine could burn any of those, although cold starting was easiest on gasoline. Often, a small auxiliary fuel tank was available to hold gasoline for cold starting and warm-up, while the main fuel tank held whatever fuel was most convenient or least expensive for the particular farmer. In the United Kingdom, a gasoline-kerosene engine is known as a [[petrol-paraffin engine]].