The H20 Hydrogen Conversion from H2O FuelMasters is an electrolysis unit that injects hydrogen into your engine. The HHO unit, for sale at www.H2OFuelMasters.com is inexpensive and improves engine efficiency, gas mileage and power. Host Pat Allison talks to Joe Castango about the unit that he manufactures and installs on any vehicle made before 1997. Video by Kyle Stambler