The difference between 87- and 89-octane is subtle. Midgrade gas came around at a time when it was needed, but it has since ...

Add Yahoo as a preferred source to see more of our stories on Google. With the price of regular unleaded gasoline still in the $4-a-gallon range, the comparative price of premium is kind of a bargain ...

John Paul, AAA Northeast's Car Doctor, answers a question from a reader who recently visited a service station offering both 87 and 88 octane gas. The Car Doctor answers a question from a reader who ...

Gas stations are rolling out a cheaper new fuel grade, but is it safe? Discover the hidden differences before you fill up your tank with it.

With the price of regular unleaded gasoline still in the $4-a-gallon range, the comparative price of premium is kind of a bargain at many stations. Really. When the price of regular surged this spring ...