In the U.S., regular unleaded gasoline usually has an octane rating of 87, with some pumps at higher altitudes also ...

Pulling up to a bank of gasoline-only pumps presents you with another set of choices. Most service stations offer at least three grades of gasoline with different octane ratings, ranging from the ...

Gas with a higher octane can withstand a higher compression ... Premium comes with an additional cost at the pump, usually ...

We've all seen those extra fuel pumps they have at the petrol station. Next to the nozzles for regular unleaded and diesel, you'll find additional pumps supplying higher octane (and usually more ...