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 ...

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'll never use 93 octane gas ever again. E85 gas is so much better for my bmw White House accidentally releases video of Trump saying the truth about war's priority Hegseth asks the Army's top ...

A lot of people treat premium gasoline like it's a little treat for their car, the automotive equivalent of replacing the usual vegetable oil with some nice, healthier olive oil for your cooking. As ...