I dont know tbh, do we reckon they run every single engine on the bench or just a few to meet QC, maybe they do some sort of minor running in procedure on each one before actually fitting them, although I am pretty sure you use crap oil to run in with, I wonder if the car manufacturers actually trust the public enough to put the cars out with inferior oil in or wether they think, peasants will abuse the car so less of two evils, send them out with fully synth ?
Conspiracy theory....