As someone who has visited both the HPL and the RL factories, and scrutinized the elements of both brands, I would say I strongly favor HPL.
There is no populist fan boy thinking here, just smart motor oil choices, with millions of miles of personally accrued driving.
NOACK on HPL vs RL oils would be similar, if it were to be ostensibly considered a determining factor.
I am surprised that the owner of a new M3 is not more thorough in knowledge base and commentary re motor oil.
After all, it is a short drive from Indianapolis to Manteno, in order to vet.