We may receive a commission on purchases made from links. Most gas stations have three options that you can put in your vehicle: regular, mid-grade (plus), and premium. These labels are also often ...

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 ...

The octane of gasoline you put in your car is a key ingredient in the combustion process—and it appears that many drivers in New York City haven't been getting the quality of gas they paid for, ...

88 octane fuel has been making the rounds recently. But just how much does it matter compared to the usual 87 octane fuel ...

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 ...

John Paul, AAA Northeast's Car Doctor, answers a question from a reader who recently visited a service station offering both 87 and 88 octane gas. The Car Doctor answers a question from a reader who ...

DENVER — Unless you have a turbocharged engine, regular 85 octane fuel may be the most expensive gas purchase you need. But for more miles per gallon, 87 octane may be the better buy than 91 octane ...