Fuel molecules have a tendency to cluster together. At the point of combustion the outer molecules protect the inner molecules from being covered with oxygen resulting in some of the inner molecules going un-burned and blowing out the exhaust as emissions.

When fuel is passed thru the Rentar Fuel Catalyst's patented combination of metallic and rare earth elements, just prior to combustion, a reaction occurs which separates the clustered molecules so more of the fuel molecules surface area is exposed to oxygen at the time of combustion.

A comparison would be if you put a piece of charcoal in a furnace for 30 seconds. The result would be that the oxygen only surrounded the outside of the charcoal thereby only allowing the outside of the charcoal to burn, the oxygen did not get to the inside of the charcoal which was protected by the outside. If you took a hammer and crushed the charcoal into a power, spread it out and put same amount into a furnace for 30 seconds, more of the surface of the charcoal would be exposed to the oxygen and a larger percentage of the charcoal would be burned.

This is what happens as the fuel passes through the Rentar Fuel Catalyst. Clustered fuel molecules are separated so more oxygen can cover more of the surface area of the fuel molecules at the point of combustion.