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There seems to be a particularly North American resistance to change based on experience elsewhere in embracing advances in technology. My knowledge of UK based BMWs, the use of 2-year oil change intervals (when using a proper Group III or IV synthetic, not most of the stuff that is allowed to be called "synthetic" in North America) and the lack of any major issues in BMW engined cars that have been using 0w20 oils now since at least 2015 (together with almost every other manufacturer, including Porsche now), lead me to the conclusion that quality 0w20 oils in a fairly low stressed engine like the B58 (low rev limit, conservative boost pressures as stock) actually work very well.
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