At least one kind of fuel cuts through the marketing malarkey. Top Tier gasoline is engineered to a higher standard. And it’s endorsed by several global automakers including General Motors ...

Among benefits are obvious fuel cost savings. The battery power would also minimize subjecting engines to peak-and-valley power demands, helping Tier 4 Final engines operate at peak efficiency.” ...

Factors like brand reputation, fuel quality (Top Tier gas), and local taxes can also contribute to price differences. While gas stations once competed in "gas wars," today, profits are driven more by ...