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There is NO WAY one quart every 800 miles is normal. Your SA is nuts. Based on all I have read on all forums, assuming a somewhat reliable sample size, I would say 4000 to 5000 miles per quart is "normal" for the N63 and N63Tu. (And even that's a bit high IMO).
Those who consume one quart per 1500 miles or less have a problem that BMW seems reluctant to address. I haven't seen many reports of oil required between 1500 and 4000.
Does anyone know how to post a poll? I suggest for miles per one quart:
0-1500
1500-4000
4000-5000
5000+
Last edited by Bönz; 04-06-2013 at 05:50 AM..
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