Higher octane fuel resists engine knock under compression — it is not a cleaner or more powerful fuel for all vehicles. Modern knock sensors in post-2000 engines automatically compensate for ...

Premium gas comes with a reputation. It has a sleek but silent marketing campaign behind it. Some claim it burns cleaner, while others whisper a promise of better performance. So when you're staring ...

Add Yahoo as a preferred source to see more of our stories on Google. Person adding gasoline to a lawn mower - Ana-o/Getty Images Using premium gasoline with a higher octane rating can improve how ...

With premium gasoline prices in parts of Michigan pushing toward $6 a gallon, drivers are facing a familiar question with renewed urgency: Is premium gas really necessary — or just an expensive habit?

We've all seen octane ratings at the fuel pump, and based on the numbers, it's easy to think the higher number is better. From lowest to highest, the types of gasoline are regular, mid-grade, and ...

(CNN) — The price displayed above that third button on the gas pump averaged more than $5.40 for several days this spring. American drivers still couldn’t get enough. Premium gas now costs around a ...

Fuel comes in different grades based on octane level at gas stations. Only some performance engines require Premium fuel for the best power output, fuel efficiency, and engine function. Are you ...

The price difference during a fill-up between regular and premium gas can be eye-opening. As of this writing, the U.S. Energy Information Administration reports that the average price for a gallon of ...

You've probably been there. Standing in front of the pump, eyes darting between regular, mid-grade, and premium. Premium just sounds better. It's more expensive, sure, but you feel premium means ...