Gasoline companies have been pushing engine-cleaning formulations lately. Setting aside the benefits for my car, are these additives good for the environment? Gasoline is a complex mixture of, well . ...

Gasoline additives ensure that a car's engine runs properly. Otherwise, the engine will knock – and you'll be knocking on your mechanic's door holding a whole bunch of your favorite dollars. But ...

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 ...

CHICAGO — The gasoline additive MTBE, which has been blamed for contaminating ground water, is turning up in fuel supplies in states where it is not required, a researcher said Thursday. Reynaldo D.

The Environmental Protection Agency ordered three populous states — California, New York and Connecticut — to continue using air pollution-reducing gasoline additives. The decision Thursday helps the ...

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 ...

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 ...

We all want the best for our cars and trucks, but is premium gas worth the premium cash?