Fuel, is not petrol.
The reason why the name down here got changed from Petrol to Fuel is because there were laws about what had to be in petrol & what was not allowed to be in pertol.
What we get now days is light crude oil that is not suited to be converted into petrol watered down with whatever petro-chemical solvents and by products that can be bought cheaply ( like Tollunine & Benzene ) which some aromatics tossed in so there is some thing volatile at room temperature so a cold engine can start.
It is a foul smelling brew of partially flamiable liquids but what it is definately not is Petrol
Some marinas sell ral petrol and some airports sell real petrol the rest is industrial chemical waste.