The difference between 87- and 89-octane is subtle. Midgrade gas came around at a time when it was needed, but it has since ...

American gas usually ranges from the high 80s to the mid 90s in octane rating, and yet gas in Europe can be 4-6 octane higher ...

I recently replaced my wife's 2012 Mercedes-Benz E350 4Matic wagon with a 2016 Volvo V60 Drive-E, a station wagon that impressed me when this magazine had a similar Four Seasons test car in its fleet ...

We see the numbers every day at the local gas station, with gas sold based on octane ratings. Most people go to the lower number—usually 87—because it’s the cheapest, but what do the ratings mean, ...

A bill pushed forward by the House would allow refiners and retailers to sell E15 nationwide, year-round.

Gasoline is a mystery to most hot rodders. For the most part, we just fill up the tank and forget about the fuel. The most difficult question is whether to step up from 89 to 92 octane. As you might ...

For a change, let's answer the headline's question with another question: Would fuel makers insist on naming 87 and 88 octane fuel differently if it wouldn't really matter? Before going over the ...

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 ...

Few drivers may know what octane refers to and how it might affect their vehicles. Metro News Service photo Few drivers may know what octane refers to and how it might affect their vehicles. Metro ...

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 ...