James, are you somewhat implying that the technician at Wal-Mart may somehow screw up an oil change on a car he has probably never worked on? Say it isn't so...

I am with you, my friend. I prefer to do it myself and know it is done correctly. Between the o-rings, crush washer, and properly tightening everything to spec, I would trust very few, and wal-mart's auto department would not be on the list....