Specialty oils and all additives for vehicles are mostly gimmicks and scams playing on peoples emotions making them think their car will run better , faster , maybe the same with these motorcycle motor oils .
No need for them .
I used car oil in my BMW for 35K miles , no problem
does not most BMW m/c have separate engine and transmission? a regular car oil will not last in a m/c with a shared engine/transmission. Diesel oil is the way to go.