It went in because it smelled of coolant and the level was low. It is still under warranty so I took it to the dealer. They diagnosed the problem. I asked about replacing the other side and they were going to charge me $500 and told me it would take 8 hours of work. I will give it a week to see how well the smell dissipates. There is a rattle from the engine now that wasn't there before. I would have preferred taking it to my local mechanic whom I trust. I must say, I am disappointed that it has had such a failure at only 50,000 miles. Leaves me with some concern for it's reliability. I was hoping to drive it for a very long time. I had an escort before this and it never gave me any problems....