I think ford fill it only up to the min line in factory. I notice that a few weeks later on my 15 edge after i bought it. I then went to buy a gallon of coolant and added to the max line when cold.(dealer cant look at it till a week later, i dont think i can wait thats why i went ahead and bought one then added my self.). I live in Houston where summer temps can easily hit 100s, having a plastic water pump that constantly has go through many heat cycles really worries me. Ford really shouldnt put it inside the timing chain cover. I dont mind it fail, but to cost over $1000 just to replace it really is disappointing.