Normal petrol is a term that is used to describe the gasoline that is commonly used by cars and other vehicles. There are several synonyms that can be used to refer to this fuel. One of the most common is unleaded petrol, which is petrol that does not contain lead additives. Regular petrol is another term that is frequently used to describe this type of fuel. Other synonyms include standard petrol, grade 91 petrol, and pump petrol. While there may be minor differences in the specific composition of these fuels, they are all designed to provide the energy needed to power combustion engines in cars, trucks, and other forms of transportation.