Well, my inexpensive fixer-upper GL just shat all its oil out the tailpipe while in the left lane of the freeway, and by the time I had come to a stop the engine was completely seized up. I'm guessing it was most likely the head gasket. I had another Ford head gasket failure just a few years ago, so I'm taking this as a lesson not to buy Fords anymore.
I think I'm gonna be a tree-hugger and get a Civic hybrid.