As I reported earlier in the week I am now running two Electrolyzer's (in series) with 5 teaspoons of Baking Soda. I wanted to report specifically on that combination: they are running quite cool even after an hour of running around town. The engine got to it's normal hotness but my HHO system stayed plenty cool enough to touch which seems like a very good sign. I've not used enough gas yet to be ready to fill up yet, but I'll get there in the next day or so and will check in then.
Oh yeah, I've added one more thing to my system that I like quite a lot - and that's wire mesh holders for the Electrolyzers. What's great about them is that it make it really easy to lift each unit out of the holder for inspection or to add water. I put my bungee cord around the outside of the mesh containers - which holds everything correctly in place. Someone I spoke with after having done this suggested that the containers could be pierced and a wire could be devised to suspend them when space was an issue - which I think is a pretty good idea...
Now I know that the question is - where did I come by these amazing mesh containers? The answer, my friends, is simple I bought them at Staples for like $6.00 apiece. You will find them in the section for pen and pencil holders. They just happen to be exactly the correct size for what we're doing.
Happy mileage.