I guess I have not been giving this wax enough credit.
Yesterday I was driving home, the sun was shining, the sky was clear and I was blown away by how shiny my XF looked. As I looked across the hood I could see a perfect shine.

The amazing thing is that I haven't waxed my baby since mid-October. Since then it has suffered the indignity of at least a dozen automated car washes.

Hopefully the weather will warm up soon and my baby can get a new coat of wax soon. Meanwhile, thank you McGuire.