Floatin'Doc
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- Thread starter
- #1
So just picking up my 3.5 EcoBoost this week. I have a ~500 mile trip planned this coming weekend, and the weekend after that as well. What is the current recommendations on break-in period for a new engine? In my mind, highway miles are easier on the engine than city driving, so perhaps this is an okay distance, but am interested to hear others' opinions....
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