Quote Originally Posted by JC5 View Post
How is it not API

The BMW site, you provided, specifies API of SM or better

Amsoil is SM or better

http://www.aa1car.com/library/API_ratings.pdf
Sorry, not certified:

http://www.amsoil.com/news/2008_worr...warranties.pdf

Amsoil takes great pains to obfuscate the fact that many of their oils are not API certified stating that they are of "API quailified" or can be used in place of oils with the following API ratings.

http://www.oilsandlube.com/amsoil_api_licensing.htm

Just use the oils specified by BMW and you don't need to worry about warranty issues.