Yeah the recommended 15k oil change is a farce it's only because BMW is paying for it at first. The real recommendation is half that, every 7.5k miles or less and or every year, whichever comes first. That's my recommendation anyway speaking of which, and as far as oil goes, I started with BMW oil, then German Castrol 0w-40 I believe which wasn't bad, and now getting ready to throw in some Amsoil 5w-40 European formula to see if it reduces my oil temps at all...my oil temps aren't high but I've heard good things about this oil and it's BMW LL-01 approved which is what you want...
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