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I found out that BMW's recommendation of 10k-15k miles oil change interval is based on some calculations given average speed and other factors and not on the oil quality. It's basically a counter which is advertised as intelligent by BMW. I'm very disappointed and am now questioning their other recommended maintenance intervals (brakes, other fluids, etc).
Since everything is electronic, how can you tell if the mechanic/dealer is actually changing the oil? With no oil dip, how would I check to see if I have new oil put in?
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