You will find the title quote at 4:18 of the linked video above. The statement is made by Anita Bersie, the Ford "Three Liter Engine System Supervisor." I am just curios how I am to take that statement? The Cummins I used to own had a "design life" in excess of 300,000 miles. My general understanding of that was that the engine would survive at least 300,000 miles before it required a major overhaul. Is my understanding of design life correct? Is this engine just a light duty engine and I should look forward to a teardown when they replace the drive belts? How should I interpret what the "Three Liter Engine System Supervisor" said?