FYI, I had to add some oil when it hit the min level a couple months ahead of the annual service. The min/max are not zero to full. I added a quart (32 oz) and it took it from the min line to almost max. So the difference between the min and max lines is only a little more than a quart. IIRC, once it drops below the min level (not a low oil pressure warning), the car threatens to go into limp mode in x miles unless you add more oil.I finally extracted a total of about 42 ounces of oil through the dipstick tube, and the MMI electronic gauge now says it's right at the max fill line.