This seems like a simple question/answer. Am I burning oil? I'd just check the dipstick and see where the oil line is.
I went to the dealership for front/rear differential fluid change. They told me my oil was dirty and needed changing (I changed it 2k miles ago

), and they also told me I had burned 3/4 to 1 qt of oil. When I got home, I checked the dipstick, and it was just barely below F. I was confused how this reading could signify I was down that much oil (it wouldn't). I added a little to be cautious. The dealership told me they'd top it off for me, I told them not to, so I'm assuming it's not from them doing that.
If I was down a qt, the dipstik would be reading by the "L", correct?