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 ...

A School of Mines professor has tracked his gas purchases since 1989 and prefers 87 octane.

America’s biofuel takes advantage of a plentiful supply of corn-based ethanol, but the reason why it's so inexpensive is a policy unrelated to cars.

Add Yahoo as a preferred source to see more of our stories on Google. DENVER (KDVR) — Gas prices are fluctuating across the country, and a few states offer a “cheaper” octane option that isn’t found ...

The introduction of RON 95 alongside E20 is intended to stabilise combustion as ethanol content rises. RON, or Research Octane Number, measures a fuel’s resistance to knocking. Higher octane fuel ...

With all the different engine and combustion theories being tested at the Engine Masters Challenge, it made us wonder about the fuel these powerplants were gulping down. For the 2015 event, we had ...

With E20 petrol becoming compulsory from April, here is an exam-oriented explainer covering ethanol blending, Research Octane Number (RON 95), engine compatibility and its relevance for UPSC Prelims ...

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 ...

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.

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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, ...