Locomotives use diesel engines thus run on diesel fuel, they do not use gasoline.
Different steam locomotives use different fuels, some of these are:woodbituminous coalanthracite coalfuel oiletc.
Most if not all locomotives have switched over from the old style of a burning fuel source to a completely electric design. Pretty much every locomotive in use today have switched over to a hybrid design.
The majority of trains in the 1940s were pulled by steam locomotives (some diesel locomotives had been introduced in the 1930s but they were not common on the mainlines). These were usually fueled with either coal or fuel oil. There were a few railroads using electric locomotives on specific sections of track (e.g. the Great Northern Railway over the Cascade Range in Washington state).
Steam locomotives are fueled by burning combustible materials such as coal, wood or oil. There are both fuel and water suppliers carried with the locomotive.
Power plants, steam locomotives, and some homes.
this nutss
Diesel electric is used on locomotives because the diesel electric system is much cleaner and quieter and more efficient than the old steam locomotives. The diesel fuel is used to run a generator which produces electric power which is used to power the electromagnetic drive motors mounted on the locomotives axles!
Gasoline, and in the early days of aviation all gasoline was the same.
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Because early locomotives did not have the power to climb steep slopes
Navier has written: 'On the means of comparing the respective advantages of different lines of railway and on the use of locomotive engines' -- subject(s): Early works to 1850, Railroads, Locomotives