Haven't seen too many reports on oil pan gasket leaking on the M54s. Is this fairly common? I think I have a small leak on mine (13 years and 128K miles). Already changed valve cover gasket and oil filter gasket, but still have a small leak pooling near the cover for the oil drain. Any ideas how labor intensive this job will be? Thanks.

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2004 X5 3.0i
Born 02/04
Delivered 03/04