Petrol line is a word commonly used to describe a line that delivers gasoline or fuel to vehicles. However, there are several synonyms that can be used to describe the same concept. These synonyms include fuel line, gas line, gasoline dispenser, fuel pump, fuel station and gas pump. The use of these synonyms depends on the context of the conversation or situation. For example, fuel line and gas line may be more commonly used in technical discussions about cars, while fuel station and gas pump may be used in day to day conversations about filling up a car with gas. Regardless of the synonym used, the concept remains the same.