It's hard to understand because it can be BOTH.
Originally Posted by Yeoman
The BMW oil change interval is 15K miles OR 1 year, whichever comes first. I don't know why this is so hard to understand.
Oil change at the 1 year mark and then again at 15,000 miles.
2011 535i Black Sapphire Metallic, Sport, Euro Del (ret)
2009 328i Black Sapphire Metallic
2007 Honda S2000 Berlina Black