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Old 01-28-2013, 10:36 AM
m6pwr m6pwr is offline
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Location: San Diego, CA
Join Date: Jan 2008
Posts: 302
Mein Auto: '14 335i M Sport
Yes, that is part of the grand design. Out of curiosity, I've asked several dealer SA's how this function works but haven't gotten a definitive answer. It's possible that the N55 has some kind of split sump where the oil level sensor is located and the engine rpm is increased so a scavenge pump can fill the part of the sump where the sensor is located. One SA told me that the oil level sensor measures oil level by the amt/volume of oil pumped thru the sensor in a set amount of time and at a set rpm. I guess that would work, but I think the flow would be affected by oil viscosity which is gong to change due to a number of factors (fuel dilution, temp, length of time oil in service). I don't really know. Anybody know? Anybody care?

Last edited by m6pwr; 01-28-2013 at 11:09 AM.
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