Check out MPG Technologies, www.getmorempg.com

They have an emissions treatment kit that will substantially lower both HydroCarbons and NOx. In addition to cleaning the pistons and cylinders their product treats the metal with a dry lubricant that will decrease friction, improve gas mileage and increase horsepower.

Official Test Results
Reduced Friction 12.6%
Improved Horsepower 15.5%
Increased MPG 17.5%
http://www.getmorempg.com/pdf/uou.pdf

Approved by the Federal Aviation Administration for use in aircraft, MPG Technologies products have been tested by the US Department of Energy, Franklin Research Group, NASA and Consumer Digest.

"We were skeptical at first, but it turns out that the product does exactly what the manufacturer claims."
Consumer Digest

http://www.getmorempg.com/testing.htm MPG Technologies backs up their claims with testing and offers some revealing information on other products on the market http://www.getmorempg.com/compete.htm

As the primary sponsor of the Long Beach Gran Prix under the LubraLon label their treatment set the pace for the industry. Emissions and fuel treatment significantly reduces toxic emissions. The transmission and gear box treatment can save thousands of dollars on rebuilds.

Racing teams have used a variety of MPG Technologies products! The engine treatment has been tested worldwide by universities, military, government and independent test facilities have shown an increase in Miles Per Gallon, reduced friction, and decreased heat and wear to extend the life of your engine. Test have shown mileage increased by as much as 5 miles per gallon, with climbing fuel prices an increase in MPG is worth checking out!

They have products for Car & Truck, Boat, Plane, Small Engine, Motorcycle, Heavy Equipment, Compressors and a variety of other mechanical engines.

www.getmorempg.com