The whole field of oil additives and fuel economy enhancers has me confused. If they work, why hasn't the world beaten a path to their door? Especially now, with fuel prices at unprecedented highs.

Most fleets would confess to using diesel fuel additives from time to time, most likely in the winter to prevent gelling. But there are fleets, lots of them it seems, that regularly treat their fuel ...

Fuel injector cleaners are additives that are poured right into the gas tank and remove carbon deposits and other contaminants from the injectors. This can lead to better fuel economy, improved ...

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 ...

Cummins Inc. recently endorsed two fuel additives, marking the first time the diesel engine maker has taken such a step. The original equipment manufacturer’s move reflects an evolution of fuel ...

Wouldn’t it be nice to pour something in or bolt something on, and see a significant increase in fuel economy from your vehicles? Sadly, experts agree that such things don’t really exist. Especially ...

If you use low-quality gas without extra fuel additives and detergents, your fuel system and injectors will get dirty. Here’s ...

Given the chore of changing it every few months, the typical motorist realizes that engine oil degrades over time. Some will also notice the mysterious codes for the different grades—10W-40, 5W-30, ...

With gas prices at record high levels statewide, drivers may be tempted to buy gasoline additives that claim to improve vehicle mileage. The Automobile Club of Southern California is advising ...

To many people, gas is gas — as long as it’s conveniently located, it’s good enough for them. But is there more to know about what’s coming out of the pump? Is there a difference between brands?

Collector cars spend more time as garage queens than they do as road warriors. And that means they sit around—especially through the winter months—with gasoline in the tank. In the old days, this wasn ...

Winter’s approach brings truck fueling systems into a different focus. Although fuel filters and water separators get routine checks year round, as ambient temperatures begin to drop, the actual fuel ...