I have not ever heard of C-Max owners having to add oil between changes before. Since you drive mostly hybrid it will be interesting to see if the oil change notification message occurs at less that 20k miles. Also the 2013 model uses 5w20 and newer models now use 0w20.
The oil level is down at the bottom hole of the dipstick. https://goo.gl/photo...71DVDB1ppC1dPCA
I may just top it up but if a tire shop is going to charge me $20-30 to rotate the tires it probably makes better sense just to get the oil and tires done at the dealership. I haven't done my air filter either and I might just add that to the list too although I wouldn't mind having a go at pulling that out myself. I did the cabin filter in about 15 minutes.