id like to see a proper test done by the manufacturers... like BMW and Mobil did with an old e30 with mobil 1 in it. they put it on rollers for 1million km's (might of been miles, i cant remember) and ran the engine non stop, and varied the speed periodically. they didnt change the oil at all and when theyd finished there was very little damage to the engine (similar to an engine thatd run 100,000ks using basic oil).
if a test like this was done (a before and after) there would be no variences like driving styles. and no one could argue that your full of shit (im not saying you are)
they wouldn't have to do a 1million km test of course.