Well, you bring up a good point. There are a lot of us who have had engines replaced. So I would be interested to hear/read whether they are human or engine errors. Mine personally, I am hard on my vehicle on occasion, but got the engine replaced the first time because of some inside help....right before warranty ended type deal. Didn't really need replacing. Now the one that they replaced it with was a piece of junk. Bad rebuild job by Ford. Now, I think I got one of the good ones. And I'm still tough on the car every once in a while. Good questions man! laugh