Science & Technology at Scientific American.com: Fact or Fiction?: Premium Gasoline Delivers Premium Benefits to Your Car -- Exploding the myth that p

So there you go: as long as the car maker doesn't specifically specify that your car needs premium gas, using premium gas doesn't buy you extra benefits. At least so say scientists. Read for yourself: Science & Technology at Scientific American.com: Fact or Fiction?: Premium Gasoline Delivers Premium Benefits to Your Car -- Exploding the myth that premium gasoline delivers better performance in the average automobile