I have recently changed career paths and have purchased a business in which I will be using a Frieghtliner M2 daily. After some research and claims of great mileage impacts I am adding an HHO aka "brown gas" hydrogen generator to this truck. Some claims are as much as a 40% increase in mileage. I'd be happy with a lot less than that, even as much as 5-10% will save me thousands over the life the truck. I'll be picking up the truck in Las Vegas the weekend of the 21st and driving it back to Oregon. I'll report back real world results for that weekend. One tank with the system running and the next tank without the system running. This will be an early indicator as to how the system is affecting the truck. Anyone who has experience with an installed system please feel free to chime in. I know if the claims are even close many of us that have trucks, trailers, motorhomes, larger vessels, etc may really benefit from this technology.