Higher octane fuel resists engine knock under compression — it is not a cleaner or more powerful fuel for all vehicles. Modern knock sensors in post-2000 engines automatically compensate for ...

A lot of people treat premium gasoline like it's a little treat for their car, the automotive equivalent of replacing the usual vegetable oil with some nice, healthier olive oil for your cooking. As ...

With premium gasoline prices in parts of Michigan pushing toward $6 a gallon, drivers are facing a familiar question with renewed urgency: Is premium gas really necessary — or just an expensive habit?

A computer generated power stroke of an internal combustion engine, following ignition - Pathompong Thongsan/Getty Images When comparing engine specs for nearly any combustion engine automobile, we ...

When comparing engine specs for nearly any combustion engine automobile, we see a number of variations available with differing outputs of horsepower and torque. We often have a choice of gasoline or ...