Gas stations have offered different types of gas for decades. There's a widespread belief that high octane gas can clean your ...

The next time you refuel, you may notice several different grades of gasoline for sale. You are probably familiar with regular unleaded and premium unleaded. But there is another grade in between, ...

When you're standing at the gas pump and looking at the different fuel grades, it's easy to wonder whether premium gasoline is worth the extra cost. Many drivers assume that paying more automatically ...