Oil is mainly used as an automobile fuel. It is because it produces the best output when compared to other alternatives. The oil by-products which are used in vehicles are known as petrol and diesel.
Petrol: It is also known as gasoline. It is a transparent liquid. It is used in petrol engines. These engines are mainly internal combustible engines (IC engines). IC engines are engines in which the combustion of the fuel takes place in the combustion chamber, present inside the engine, in the presence of an oxidizer.Diesel: Diesel is also a liquid fuel mainly used in diesel engines. The word "diesel" is derived from the family name of German inventor Rudolf Diesel who in 1892 invented the compression-ignition engine. Diesel is produced from the crude oil by the method of fractional distillation at the temperature of 200oc and 350oc at atmospheric pressure.