Gas prices are on the rise again. Here in Eau Claire the average price of gas is around two dollars and fifteen cents a gallon.
As the price of gas goes up so do the advertisements for gas saving devices.
Some ads claim to be endorsed by a consumer protection agency and their tests confirm the device improves fuel efficiency.
But Cindy White, an official with the Wisconsin Consumer Protection agency, says all of their tests prove otherwise.
"The EPA has done various tests and they found that it does not increase gas mileage; sometimes what it does is just increase the exhaust emissions and can wreck engines."
White says not one device is endorsed by a Federal or State Consumer Protection Agency, and the only way to save gas is through conservative driving and good vehicle maintenance.