Since we're talking about Ford engines - what's the word on their 6.8 V10 engine? I see an '08 F250 here with one. About 82k miles. Do they get any kind of mileage or is it a gas hog?
Not a fuel mileage champ for sure. All of Ford's "modular" engines had some issues with exhaust manifold bolts breaking and many had spark plug issues. They used a one piece plug that was pretty long and stuck it down deep in the head with little room to work on them. Then to compound the issue they cast the head with only enough room for 2-3 threads for the spark plug. Worked OK till they needed changing, by then they pretty much grew fast to the head causing a lot of problems. More than one mechanic has stripped the threads on those heads while changing spark plugs.
