your dealer will change your oil for you, you don't have to pay an independent shop. (its also easy to DIY) they will check your history and change it if it has been sufficiently long enough.

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BMWCCA Chapter President, Hawaii Chapter (fmr)
03' X5 4.4i, 02' MCoupe, 99' MCoupe (sold), 88' M3, 01' E39 M5