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      04-01-2007, 12:13 AM   #291
Respect my Authoritay
klinkerklu's Avatar

Drives: 330xi ED
Join Date: Nov 2006
Location: SF Bay

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2006 330xi ED  [0.00]
^Yea, but 75% it happens to us on warm days (60F+), after we reach our destination. In our case neither the outside temp or oil temp has been a factor.
Town driving definitely exacerbates it (ie, driving betw. 1-4K RPMs).
So since the oil pump is mechanical, does the engine speed determine the rate of the pump, and therefore there is less pressure at lower RPMs?
But wouldn't that mean everyone would be having these problems?
Sorry, I am just a biological scientist chick here trying to understand mechanical engineering...
330xi | 6-speed | Sparkling Graphite | Sport Package | iPod Adapter| BlackLines| F1 Pinnacle 35%