Why do you assume?
The B58 comes in many formats and tunings.
It's as smooth as a gravy sandwich! I love it.B58 to date is probably the best inline 6 BMW has ever produced.
That's not a new issue. The hurr-durr of the seventies with thick single weight oils and 3000km oil changes persists.What I found interesting was what he was saying about the oil viscosities particularly the 0W-12 he mentions. Oil viscosity seems to be a contentious topic at the moment, and it doesn't matter what brand the 4x4 is.
All your b58s have this tapping sound, esp when cold?The Grenadier will be my 5th b58 (X3 M40, and 3 X5’s) and never an issue. Always 5K oil changes.