Recently read comments from Shell customer support saying T6 should not be used on petrol engine with catalytic converters.
Will try to find the exact quote.
Edit: http://www.bimmerforums.com/forum/showthread.php?2145592-Damn-new-oil-thread-Rotella-T6-full-synthetic-NOT-for-use-in-automobiles-per-Shell
(Actually yesterday)
Replaced the licence plate that fell off while riding sometimes during the last week (lucky not have gotten a ticket), and did the first oil and filter change.
Break-in pretty much over