As far as the oxidation is concerned, I had the same concern. After a lot of reading and research, I'm fairly confident that a simple booster doesn't produce enough gas to cause any damage to an engine. Partly because it's just not producing enough to hurt much and two, because normal gasoline contains detergents that actually help prevent damage to engine components. Otherwise, stock exhaust systems would turn to dust a lot faster than they already do. I read up on a guy who says that he's now made two vehicles that run completely on hydrogen (I'm not sure if I believe it or not, but I don't really care either way - he DID have a lot of information I found useful.). He said that he had to make the entire exhaust system out of stainless steel because everything else disintegrated.
With the research and experimenting I've done myself, I believe that KOH is the best way to go for so many reasons including risk to the engine.
Give a man a match, and he’ll be warm for a minute, but set him on fire, and he’ll be warm for the rest of his life.
2000 Pontiac Grand Prix GTP 3.8L SII S/C'd
15%-20% MPG increase at 1.5 Amps
2000 Jeep Grand Cherokee Limited 4.7L V8
No gains.