The central truism regarding any fuel additive is that sometimes you need it—and sometimes you don’t. Aside from the untold legions of snake oil substances touted to improve fuel economy, there are ...

CALGARY, Alberta -- Shell Canada, the nation's fourth-largest oil company, said Monday it will reimburse customers for damage to vehicles' fuel gauges and fuel pumps caused by additives in its ...

If you find yourself lost in the fuel additives aisle or just sticking to the same old thing, you are not alone. To make the right choice and get the most for your money, you need to understand how ...