I brought a 140,000mile 2001 olds minivan with a v6 engine and a blown head gasket. For over $2,000 they replaced the head gaskets and told me it would be good for 100,000 miles. It was good for 20,000 miles. Later, I learned the engine is known for blowing head gaskets and was discontinued as a result.. I don't know if the information about the engine was known at the time of repair but it would have made a difference if I had been informed of the engines' history.