How Change oil pump on mercury mountaineer?

Well, honey, changing the oil pump on a Mercury Mountaineer ain't no walk in the park. You gotta jack up the car, drain the oil, remove the oil pan, disconnect the old pump, install the new one, put everything back together, and refill the oil. If you ain't got the tools or know-how, I suggest you leave it to the pros before you end up with a bigger mess than your Aunt Edna's fruitcake at Christmas.