Front Suspension Leaf Spring problems of the 2013 Ford F-150

Tl the contact owns a 2013 Ford F-150. While driving various speeds, the front end of the vehicle shook and vibrated and the rear end of the vehicle became unstable and swayed from side to side. The vehicle was taken back to the dealer (werner Hyundai in tallahassee, FL) where it was diagnosed that the leaf springs were faulty and needed to be replaced. The parts were not available and the vehicle was not repaired. Later, while the vehicle was parked, a loud air pressure type noise was heard under the hood. The contact discovered oil had leaked from the engine. The vehicle was towed back to the dealer, but no failures related to an oil leak were found. The manufacturer was not notified of the failure. The VIN was not available. The failure mileage was 92,000.