If you go to a gasoline pump to fill up your car, you’re likely to see 3 different types of fuel: Regular gasoline (87 octane), mid-grade (89 octane), and premium (92 or 93 octane). But what do these ...

James F. Tierney worked in the energy industry for more than 40 years. The cyclical spikes in gasoline prices could be alleviated to a large degree if the California Legislature acted upon a proposal ...

We’ve been reporting for years that there’s zero advantage to using a higher-octane gasoline than your car requires, and that you can also get away with regular gas if your car merely recommends ...