Ford Motor Company ford engine dies at 100 thousand miles Nationwide

Ten years ago (possibly eleven) that vehicle came with a 36-month/36K mile warranty. You requested free service even though the vehicle is more than triple the age and almost triple the mileage of the warranty limitation. That is absolutely hysterical, but kudos to you for giving it a try.

You have driven the vehicle over 50K miles in two years. That is more than double the national average. You don’t know if the vehicle was well maintained for the first 50K miles. The vehicle may have suffered from insufficient lubrication or over-revving of the engine. A previous owner may have operated the vehicle with low oil or low oil pressure. Ignoring a knocking sound can result in catastrophic engine failure. To get 250K miles out of an engine it must be properly maintained during the entire life of the vehicle, not just the second 50K miles.