Fords v6 3.5 and 3.7 have outsold the 5.0 this year. I have both eco boost and 5.0. Heavy loads the eco will output the 5.0. Other than that not much differnce. If you have a heavy foot the ecoboost will drink more fuel. I have 66000 miles on ecoboost and has never had a problem, the 5.0 has 90000 miles and never had a problem either.
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