These things have come around every time gas goes up. I have never seen any of them work as advertized or even slight improvement. I have done fuel mileage tests and 4 gas analizer tests and never found an improvement. (back to back to back testing) I know alot of you hate the oil companies but if one had a fuel economy additive that boosted FE they would advertize the heck out of it and the competitors would have to come up with their own. They would sell alot more fuel and alot of you would buy it if it worked. There is no free lunch........... E=MC2

Ducit Amour Hybridae
Mark Smith
Master Certifited Technician
Tempus non reparabilis fugit
"It isn't pollution that's harming the environment. It's the impurities in our air and water that are doing it."

Best Tank 35.0 MPG