I have stainless steal plates in a 5 gal. bucket of water. I hook up 12 volts from battery to the plates. Then I run a tube to my intake manifold. This cuts my gasoline intake down. I hot rodded the idea and went with 2 five gal buckets to increase hydrogen (Flammable gas) I was pulling more volts so I added a extra alternator. I also put a tank on top of my RV to increase storage of the hydrogen to cook with and heat my RV in winter. Sence hydrogen is a clean fuel it reverts back to oxygen when burned. I Have in my photos a hydrogen cell I built that is a good producer. If you want to save in gas Let me know, I will be glad to help you get started.