Normal
Back when the first gen ecoboost came out the 11 and 12 models had some issues with chains and phasers that were said to be caused by too long oil change interval and the ones changed at 5000 were lasting the longest. Heck some were going well past 200000 miles while others were done at 50000. I remember this specifically when my last truck was purchased back in 13 so I ended up with the coyote and had no issues with the V8. My new 18 Raptor will have its oil changed much more frequently than the recommended 10 thou that's for sure.
