I change oil and filter every 7.5k miles or 6 months (whichever comes first) Waiting for service indicator is too long. IIRC, the interval was set for 12k-15k miles. Even though it might be OK with LL-01 oil, that's the risk I'm not willing to take. Synthetic oil can still lubricate past 7.5k miles interval.
As for your X service record: you might have to look at the date on the parts to determine if and when they get replaced.

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00 E39 DINAN S1 //M5 (82k miles)
06 E53 DINAN 4.8iS, born 2/18/2006 (126k miles) http://www.xoutpost.com/bmw-sav-foru...s-my-dslr.html
90 Straman Z32 TwinTurbo Convertible, (1 of 44 ever made) 5 speed, 444rwhp/451rwtq
01 360 Novitec Spider F1 (26k miles)