Do “gas saving” products really help?

The answer is “probably not.” Be skeptical of the following kinds of advertising claims. “This gas-saving product improves fuel economy by 20 percent.” Claims usually tout savings ranging from 12 to 25 percent. However, the Environmental Protection Agency (EPA) has evaluated or tested more than 100 alleged gas-saving devices and has not found any product that significantly improves gas mileage.... Read More