MPG-Caps are proven to:

Save on Gas
Improve Engine Efficiency & Power
Lower emissions & Help Preserve the Environment

MPG-Caps have been tested by the EPA(Environemtnal Protection Agency) and the EPA states that they will in no way harm your engine or any part of your vehicle.

Below are some videos of news organizations putting MPG-Caps to the test:

NBC Tested MPG Caps and THEY WORKED!:

http://www.youtube.com/watch?v=x1qk0RsZZmU

Target 9 Investigation, IMPROVED MILEAGE ON FIRST PILL!:

http://www.youtube.com/watch?v=77fjg8IlFMo

WSAZ News Channel 3, Saved 1 gallon of gas on 100 mile trip!:

http://www.youtube.com/watch?v=_YHHoZt4A44

Also see,
What Are MPG-Caps?
How MPG-Caps Work
How To Use MPG-Caps
How To Purchase MPG-Caps

Hosted by www.Geocities.ws

1