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 ...

The price difference during a fill-up between regular and premium gas can be eye-opening. As of this writing, the U.S. Energy Information Administration reports that the average price for a gallon of ...

The fact that you're reading this now means there's a pretty damn good chance you pump gas into your car. And because of that, you've got a combustion engine under your car's hood. Of course, some of ...