No - I am saying that if he did use D for the gain, the engine would become strongly radioactive in a short time from neutron activation of the engine block and pistons.
More specifically, if deuterium was providing neutrons for over 100 HP of gain as in the claim, Papp and the other observers would have been dead from radiation poisoning in a few hours of run time. From: James Bowery Are you saying Papp removed the .02% heavy water that occurs naturally in water?
