I used to try to explain to competitors that made the claim of flammables in the oil, various claims were made about volatiles in the oil that made certain people faster. My assertion is an engine with half a quart of oil in the sump would need some amazing chemical, and be be built so loose and sloppy to leave enough of this miraculous propellant in the combustion chamber to make a difference. Think about that engine the engine oil is the carrier of this fuel, how much of this fuel must be entering the combustion chamber to make a power difference. If you could get enough in the chamber you will have a tremendous amount of engine oil there also which is a power killer, the engine built that sloppy cannot be making power, the only way to get the oil into the chamber, is the rings leave it on the cylinder wall or past the intake valve guide. The myths surrounding oil are as believable as tuning your carb by spark plug gasket temperature.