Costco’s premium gas, available at locations nationwide, has sparked a debate among drivers about its exact octane rating. Is ...

TOLEDO, Ohio — Whether you’re planning a road trip or just stopping to fill up after work, gas prices are always on drivers’ minds. One type of fuel is standing out for being consistently cheaper: ...

There are different gasoline grades based on octane. Here's how to tell which grade of fuel your car needs and why.

We may receive a commission on purchases made from links. Most gas stations have three options that you can put in your vehicle: regular, mid-grade (plus), and premium. These labels are also often ...

The answer is yes: You can mix 87 and 91 octane gasoline without blowing your engine to hell. With that out of the way, let's discuss what mixing different octane fuels does to your engine in terms of ...

What's meant by "premium" isn't the same from gas station to gas station or even from state to state. So what will you find ...