Finished washing the car and the front bumper wouldn't come clean because of some serious road tar/oil/junk. Just a week ago I did a full detail including Iron X, clay, glaze, and sealant, and the road junk still stuck to the front bumper. Had to break out the clay and it came out looking black and streaky. The Meg's D156 beads water better than MPL alone from what I can see. But she's back to being pretty again.