Quote Originally Posted by Goodburbon View Post
My next truck might have to be Toyota
My dad's 2010 4Runner dropped a valve into the motor with less than 5K on the clock..
Every manufacture is going to have bad parts in a given lot.

Toyota pretty much invented AQL and every major manufacture uses it today regardless of what they are producing.
http://www.qualityinspection.org/what-is-the-aql

Personally I would have made Ford take it back and switch me out after the 2nd one popped.