For anyone who has not been seduced by chili and still loves Tron, I thought I would share my experiences with wax and the spinning disc grime.
In all cases, I started with a Novus 2 cleaning of the playfield, which cleans off the black disc grime and any previous wax.
1) Mothers California Gold carnauba paste wax helped to slow down the accumulation of spinning disc residue. However, after 1 week of play, there is noticeable build up of black residue down the center of the playfield, the in-lanes, and the orbits. Some of the residue could be removed with a cloth, but most could not be removed except by reapplying Novus 2 which requires rewaxing.
2) Turtle Wax Ice liquid wax has been keeping my playfield free of grime for two weeks now. There is very little noticeable black residue. What little black residue is on the playfield is easily cleaned up by using the accompanying Turtle Wax ice spray detailer, which is claimed to also be a wax booster. Neither the wax nor the detailer will stain plastics (such as star posts) or leave behind any white dust. I have also used the detailer to clean up the Recognizer targets.
I have no idea if this wax works well on cars or if this is good for keeping other pinball dirt off the playfield. But for those who prefer keeping the black spinning disc, application of Turtle Wax Ice liquid wax, followed by weekly touch-ups with Turtle Wax Ice detailer and ball cleaning has kept my playfield clean of the black spinning disc residue and kept ball speeds FAST. And faster is more bester.