All the engine parts are warranted by Ford for 100,000 miles and 10 years thanks to the EPA as they are part of the emission system. The drive train is only warranted by Ford for 5 years and 60,000 miles. A few more miles before that expense. Expected life of you Ford diesel is 1,000,000 miles but the V-10 expected life is just 200,000 miles. I doubt either of us will drive our coaches enough reach our engines expected life.