Fuel economy improving gadgets DO NOT work?

FTC has warned consumers on gas-aiding gadgets

Are you tempted by gadgets on the Internet, or at your local auto parts store, claiming to increase your vehicle's fuel economy? Maybe you've even tried a few?

Well, don't waste your time, experts claim.

"A recent consumer warning from the Federal Trade Commission showed that gas gadgets such as air bleed devices, mixture enhancers and fuel additives rarely pay off. In fact, they're 0-for-93.

The Environmental Protection Agency's Ann Arbor laboratory tested 93 additives, modifications and other products that claim to improve fuel economy. None received the agency's seal of approval. The lab's analysis, spanning 30 years, found 10 devices that showed a small improvement in fuel economy, and four of those increased emissions.