Hi mrgalleria,
I tested small gasoline engine on idle,1500,2000,3000 RPM,no saving.I connected engine to Taylor instrument(very accurate)I am using amonia and one pound of nickel wires.No saving.What you think about that.
Next,Diesel engine likes hydrogen.I run 10HP diesel genset and made around 40% of "saving".But ,that is not saving ,I simple replace amount of diesel with 11L / min of hydrogen.Engine works very smooth.
eco