Commercial for Castrol GTX Liquid Engineering motor oil; a bead of oil streams along a white line that runs between orange and green shapes that are straight, curved, and constantly moving; male voiceover: “it is straight, square, curved, circular. The precise shape of every moving part that it clings to. Lubricating, cooling, and protecting. Oil is too small a word for it; it is Castrol GTX Liquid Engineering! Put it in your engine!”; ends with a shot of a wrench, a bottle of Castrol GTX, and a small pool of the lubricant that had traveled along all the aforementioned surfaces.