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 ...

Motorists often wonder whether they should fill up with regular petrol or opt for 'Power' (premium) petrol. Some believe ...

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?