My engine light came on. Went to local auto-parts store and got it checked, came back cylinder 1 misfire & system too lean at idle bank 1. Now I went and change all the spark plugs since I have not (2008 R55 has 56k miles), and found oil on the cylinder 1 well and spark plug. The rest does not have any oil in the well or spark plugs. Now my car, on a cold start, it sputters like it wants to die out. Could it be that this was the issue and why there is oil in the cylinder. Anything would help, thanks in advance.