Yeah, exactly. That's why I refer to my humble '98 as a slantsixm3.

Back to this oil thing, I have been using Castrol Syntec 5W-50 for the last 6 years or so, before that, I ran Castrol 20W50 conventional for the first 40k miles, just to ensure the engine broke in fully. In the 90's some engines had a "never broken in fully" syndrome when run on full synthetic from day one. Modernization of manufacturing techniques including better surface finishes have all but eliminated that issue these days.

Times change, technology advances. Using rules your Dad applied to his '62 Buick will waste valuable resources and your hard-earned money. Keep up to date and do what the manufacturer recommends.

Back in the old days (yeah that's me), the hottest of the hot rod Chevys were the ones that were run WFO from day one. They would loosen up a little more and run very strong afterwards. This even from Chevy engineering. You could run 'em hard, just keep them in the temp range.

That said, one must never, never overheat a new motor. Not good for an old one, either.

Enjoy your BMW.