Motor fuel is a type of fuel used to power motor vehicles. It is typically derived from petroleum and other fossil fuels. Common motor fuels include DIESEL, PETROL, GAS, and octane. DIESEL is a type of fuel made from petroleum that is used in DIESEL engines. PETROL is a type of fuel made from petroleum that is used in gasoline engines. GAS is a type of fuel made from petroleum that is used in both DIESEL and gasoline engines. Octane is a type of fuel made from petroleum that is used in gasoline engines to increase the engine's performance.