I recently ran into a good friend from high school and he still has his very well maintained 2007 328 with the same 3.0 engine as my X. I think he has just a little over 100,000 miles. He recently had to have his oil pan gasket replaced and he wouldn't say how much but he was pretty upset about the bill from the dealer so I'm sure $1,800ish would be about right.

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2001 3.0i * SOLD *
Current
2010 E83 Alpine White