As I recall, the Taurus starter is positioned almost directly under the oil pan drain cock.
Yet another WTF moment brought to you by Ford.
If not the pan drain, then the filter. One way or the other, the positioning is almost guaranteed to drip oil on the starter at least at every change, if not also between changes.
That's still not as bizarre as the Caprice mentioned up thread, which puts the ignition coil packs next to and directly behind the water pump (!?!).