[aerohead]

1) 'coefficient of friction' isn't applicable in automotive lubrication.
2) 'slippery' is not a 'metric' used in tribology.
3) You poured your mixture into a 'pre-warmed engine, but a 'Cold' car.
4) You took it 'easy' ( 'easy' is not a quantifiable value which might inform the reader ).
5) Oil 'thickness' wouldn't vary in an automotive engine with 'acceptable clearances', if given its OEM-specified SAE/API motor oil. And even if the rings were shot, I'm not certain that the oil film on the cylinder walls or camshaft lobes would be appreciatively different.
6) 'About 10-km later' ( the car requires 36-km, at 88-km/h constant speed before it will attain thermal equilibrium, at which point 'testing' would be allowed to begin.
7) As I told you elsewhere, the car's fuel economy will 'improve' by 20%, without ever doing a thing to it!
8) You drove the car to 'top speed' while it was still cold, and 'exceeded' the original top speed, which would have been measured fully, thermally equilibrated; a remarkable claim, requiring equally remarkable evidence.