If you've ever fueled up in Colorado, you might have noticed something unusual about the gas octane ratings at the pump – specifically, the availability of 85-octane gasoline. This lower octane fuel ...

87 octane gasoline, often called "regular" gas, is one of the most commonly used fuels in the United States. But what gives it that 87 rating is a word you've probably heard a time or two: Ethanol.

We’ve been burning gasoline for well over a hundred years now, but some misconceptions about fuel—especially when it comes to octane—are so ingrained in the popular consciousness that even those of us ...

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 ...

Consumers are currently faced with three or so choices at the gasoline pump: 87, 89 and 91 octane. Gasoline is blended regardless of origin, and there is no indication where it’s from as one finds on ...

Add Yahoo as a preferred source to see more of our stories on Google. Those who fill up with 87 octane fuel may be the smart ones. MLB News Updates, March 9: Shohei Ohtani looks like a No. 1 pick, and ...