2011 F150 ecoboost, 93,000 km. engine light came on. coded as crankcase sensor. drove for a few more km. Ontario in Dec very cold, minus 30 deg for more than a few days. tried to start. fumbled, stumbled, ran really, really rough and stalled. tried to start again with the same results. next time I tried to start the starter spun, disengaged and would not turn engine over. towed to dealer. dealer called with good and bad news news. bad news, engine shot, replace. good news, covered by warranty. the reason is a stretched timing chain. sad news is now i have a brand new engine with only 7,000 km of warranty from original 100,000 km power train. the dealer will offer another 100,000 km power train warranty for $3000. Hmmmm. $3000 to cover ALL the power train, including AC, turbo, tranny, etc., etc., for another 100,000. may have to trade in one of the grand kids. JUST KIDDING.