Hey Guys, I was wondering if anyone knew that Royal Purple Upgraded their licensing to make it API SN compliant Link: http://www.royalpurple.com/motor-oil-sn-sae.html

I don't know exactly when they did this but as it seems we can now use it without risk of catalytic converter damage in our bimmers!!!

My guess is to use the redesigned containers as that would probably be the best indicator.