Original, 1998 Ford Light Duty Truck Service Specifications handbook/manual contains information normally not found in the service manuals or owner's manuals.  Models included are Econoline, Expedition, Explorer, Mountaineer, Navigator, Ranger, Villager, Windstar, and F-Series -150, -250. Information primarily consist of measurements, sizes, dimensions, quantities, etc. with relationship to brakes, suspension, transmission, engine, ignition system, fuel system, lighting system, etc.