Or is it the engine/driving conditions that make an oil shine in an application ? In the used oil analysis section, we see some shining examples of wear numbers. I was particularly impressed with the BMW on Delo 400. Is it the oil or the conditions that give the great results ? What I mean, is if you did an analysis of every oil test to date, picked the oil that performed the absolute best out of all of them, stuck it in any vehicle, would any other oil possibly have a chance at bettering the wear numbers ?