Quote:
Originally Posted by CT335xi
I actually change mine every 5k , I know it might be over doing it but I know it’s not hurting it.
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i have always done a oil change in-between the "free" bmw scheduled maintenance. next time do an oil analysis between 5k interval and a 7500 mile interval and compare the findings from blackstone. i suspect you could probably stretch it out to the 7-8k area without issue.