PGlaves
#13338
This is because I didn't ask for oil recommendations and did NOT want to start an oil thread. That choice has already been made and I'm switching to the correct viscosity. I just wanted to know what was causing my cam chain rattle.
The most likely cause of your chain rattle is the use of an out-of-spec oil, which means that a discussion of oil specifications is unavoidable.
That said, it is your bike and you can do with it what you wish, whether that meets BMW specifications or not. Your bike; your choice; your risk.