We spoke to an expert to answer questions like "does premium gas have ethanol?" so that you can fuel your car with peace of ...

Gas stations have offered different types of gas for decades. There's a belief that high octane gas can clean your engine, but it doesn't really work like that.

Many configurations of the popular Ford EcoBoost engines run just fine on standard gas, but it turns out that you might see a ...

If you demand the very best for your vehicle, Sunoco Ultra 94 is it. It is the highest octane fuel for your vehicle and it meets the most stringent requirements for detergents with a Top Tier rating.

Cost is often the first thing that comes to mind when motorists think of gasoline. Many will drive halfway across town ...

Unveiling the Octane Ratings - from knocks to burns, demystify the numbers on the pump for optimal car performance. Get fuel-savvy insights now.

There’s premium gasoline, mid-grade, regular and – depending on where you live – some even offer ultra-high octane, with a rating of 94 or above.

A driver faced with the hard truths about octane ratings wonders if she's been doing it all wrong after putting 89 octane gas in her car.

Some cars require premium high-octane gasoline, others just recommend it, and most cars are fine running regular 87-octane fuel (it might even be lower at high altitudes). If your car normally ...

The higher the rating, the more stable the fuel, EIA explains. The number that appears on the gas pump’s octane label is the minimum octane rating, according to the EIA.

There’s regular, super unleaded, supreme, and numbers ranging from 85 to 93 – how do you know you’re getting the right fuel for your vehicle?