Ethos Fuel Reformulator-Any Good or Snake Oil?

[NorthIL]

A friend(?) of mine is trying to peddle this stuff, some network marketing thing. He gave me a free bottle, but want to know if this is any good before putting it in my car. Comments?

http://i74.photobucket.com/albums/i265/NIllinois/ethos.jpg

http://i74.photobucket.com/albums/i265/NIllinois/ethos-front.jpg

http://i74.photobucket.com/albums/i265/NIllinois/ethos-back.jpg