Consumers just haven't had the trucks long enough to say they are reliable in higher mileage applications. Same with the 6.7 PSD, 5.0, etc. All of these motors are still new by todays standards, so only time will tell how they live up to high mileage.
Yeah, Ford did a torture test themselves, but nobody else has done so, so 1 data point can't be taken as the truth.
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