I couldn't understand why the dealer didn't pick up that the coolent was spewing out and why it didn't happen on the test drive. It would seem that the previous owner knew this was happening and tightened the coolent cap so tight to try and stop the coolent coming out of the crack that a wrench was needed to undo it. So when the dealership checked the coolent levels they put the top on as normal which meant as soon as we drove the car away the the coolent started coming out of the crack again......at least it sorted now and my wife can enjoy all 4.4 litres of her dream car....and what a fantastic car ir is.