Purchased used truck from Barreth Ford in Union Mo. Truck bought as Q-Certified with a Q-Ultimate warranty.2 Years or 100000 miles.Broke down at 97000 miles.Egr valve failed from carbon buildup.Valve not covered by warranty.Paid $600 for repair and towing. Fast forward to 100010 miles.Thats right ten miles over the warranty.Another breakdown.Same problem egr valve failure. My town dealer [sam scism ford] determined this valve failure was being caused by excessive carbon buildup in the intake manifold.Occuring over a period of 30 to 50000... read full review »