That's a good question. Normal HHO systems get pretty hot because of the amount of amperage they use trying to produce enough HHO gas to affect their mileage. Most older systems are similar. Once they get hot, some of the product produced is HHO gas, but some is actually steam. Because of that- the water is used up quickly and needs to be refilled every few days.
Part of the reason this happens is that every system out there (except ours), has exposed edges in every plate. If they are a dry cell with compressed neoprene gaskets, they still have holes in every plate to allow the water to pass from one cell to the next. every hole is an exposed edge. We have found that it is the edges of the cut stainless that leach into the water and turn it brown quickly. Or if your system gets over a certain temperature, which then changes the electrolyte chemically and stops production of HHO gas.
But when we engineered our new 800 series from the ground up, we designed it to have no exposed edges internally. There are no holes in the inner plates. Everything is covered, either by plastic retainers or molded plastic. It is what makes our hho generators unique and more advanced than anything available.
We didn't know how well our system would work. We knew what we wanted to achieve, but no one has ever done this at the level we were trying, so it was a crapshoot. Boy were we surprised when we started firing them up in our own test vehicles! First of all, the water stays clean! It doesn't get thick, brown, or murky. Second of all, we found that because of the efficiency, it barely used water at all compared to the old style!
Sometimes just a half liter of water a week is all that is needed! It's crazy to think you can save $50 or more on a tank of gas, using just $1.00 or less of water!!!
I'll be installing in my Toyota Tundra soon and giving some updated videos and mileage results, so stay tuned!