I just lookup the international recommendation, e.g. mazda mzr engine found in the early 6, ford fusion, focus etc etc. are specced for 5w20 in USA and 5w30 elsewhere.

The turbo mazda mzr is specced for 5w40 - but is serviced with 5w20 in USA, engine failures are higher in the USA too.

co-incidence??

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)