So explain how H injection doesn't work again?

[theholycow]

I imagine that its effect on common diesel engines would differ from its effect on common gasoline engines.

I personally would not argue that hydrogen added to fuel would or would not help, but my only question is if it helps more than generating it onboard hinders. If you try to tell me that it only takes X energy to make it but you get X*2 energy by burning it, I won't believe it. If you want to suggest that it catalyzes the other fuel or enhances the combustion, well that's more realistic.

If you're talking about generating it elsewhere and just carrying it onboard, that's a whole other story.

That all said, I suspect I will eventually try it. It can be tried with minimal investment (maybe zero money, and just a few hours time), and some people do report success, so why not...