Motorcycle Specific Oil vs regular oil
I saw this question pop up in a thread and I figured ask Amsoil's Technical Advisor ED Kellerman. This is the reply I received.
Thank you for contacting AMSOIL with your concerns.
As long as the oil meets or exceeds the manufactures specifications, the warranty cannot be voided. Our motorcycle specific oils however are extremely resistant to high heat and high shear commonly found in motorcycle applications. With this in mind, anyone who feels uncomfortable with using automotive or diesel oil can certainly use one of our advanced motorcycle formulations as well.
Thank you again for the opportunity to respond to your concerns. As always, please feel free to contact us again if we can be of further assistance.
AMSOIL Technical Advisor
I guess the question is does the BMW owner manual have any specific wording requiring "Motorcycle Specific oils" or does it simply state that your must use the correct API rated oil?