I just saw an article yesterday, Yahoo or MSN, can't remember which, that spoke of the unusually high rate of engine failures in Explorers with the "police" package. Even after Ford has done numerous inspections, they have not reached a conclusion as to what is causing these catastrophic failures. Rod through the block failures which has lead to engine compartment fires. They theorize that it's either rod bearing related, lubrication related, etc.
https://abc7chicago.com/post/ford-r...approximately 85,000,L hybrid or gas engines.