Yeah, my enthusiasm for keeping the xf nicely polished faded after I did the whole clay and wax thing three times. Now I'm glad I have a white car and not the black one I was eyeing up at time of purchase.

I now just wash it, and every other month I'll clay and wax one panel of the car. And just keep it in rotation. I have better things to do with my time than wax and polish cars for 8 hours a day.