I know much has been written about the oil cooler. But I have a more mundane query. How does one go about changing oil? I, like many, am not satisfied with BMW's schedule for oil changes, especially during the break-in period. The problem I see is that without a dip stick we can not know for sure how much oil should be added. I know from experience that the quantity of oil stated in the owner's manual is never an exact amount. I suppose we could ask a BMW service tech but does anyone have a practical solution for changing oil?