You should have put some common chlorine bleach in the drill hole & compaired it, you might have been surprised, then again, maybe you should have ask for a copy of his MSDS!!!!! lol

Engines produce very little heat from friction, most of the heat comes from the combustion process, conducted to various parts of the engine.

The engine also needs a cerain amount of heat to work efficiently, but then the otto cycle gasoline engine isn't now very efficient, no matter what you lube or fuel it with!!!!! Maybe some day when we can have a ceramic engine, that'll take the heat, then watch er smoke!!!!!