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Originally Posted by vinuneuro
That's because the North American oil sold at your dealer doesn't meet BMW's LL specs.
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Actually the BMW 5w-30 sold in North America meets the older LL-98 spec and ACEA A3, but does not meet the LL-01 spec. This is because it is a group III hydrocracked oil, not a Group IV PAO or Group V Ester oil as is required by BMW LL-01.