What kind of engine? There's steam, gasoline, diesel, 4 stroke, 2 stroke.
Depending on how old, old engines run on compressed steam, new engines run on a mixture of petroleum and air (atmospheric).
Yes, biofuel, like biodiesel, will run in diesel engines. Many ships have diesel engines run on fossil fuel diesel and they will easily run on biofuel.
Diesel engines run on diesel fuel. Gasoline will destroy a diesel engine.
98% of cars run on gasoline engines.
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Gasoline. Same as most V6's V8's and other engines.
Gasoline engines cannot run on diesel. Only a diesel engine can run diesel. And a diesel engine cannot run on gasoline.
Yes, both fire and Paramedic units run diesel engines. Others are powered by gasoline or even compressed gas.
All engines run by combustion by electronic fire and man made gasoline.
Convert them to run on biodiesel.
Because they run by engines and gas. That's why.