So to summarize, depending on ambient air temp, looks to me like any of these 15/50 or 20-50 oils in the test will work fine. They are all above the 1200 ppm zinc level that BMW specs. Everybody has their favorite oil, just like ice cream.

I probably would stay away from using the oils with low TBN numbers unless I saw a used analysis on the oil.

Its interesting to see the Harley Oil ( I think Citgo blend ) numbers. Harley puts this oil in all their bikes engine, primary & transmission coming out of the factory except the CVO models, these ones get their synthetic oil. As others have noted looks like this stock oil would work fine for those that are on the road and can't find their favorite brand.

So are we any wiser. Let the debate continue.