| Infrared radiation (With or without negative ions) | Volcanic rock (ground and heated), zeolites, other ceramics, minerals |
| Hydrogen gas production (With or without non-thermal water vapor) | Brown’s gas, triboelectric charged metal alloys |
| Reformulation of fuel with increased combustible hydrocarbons and/or reduced natural oxidation of the fuel | Metal alloys, ferrous picrate, various hydrocarbon formulations |
| Reorientation of the fuel molecules | Magnets |
| KELEA (kinetic energy limiting electrostatic attraction) | All the above, fuel in proximity to KELEA activated fluids, other activating materials and/or devices |