According to the 1998 Ford Expedition Owner Guide :
The engine cooling systems for the 4.6 and 5.4 liter V8 engines came from the factory with :
A 50 / 50 mix of distilled water and GREEN colored antifreeze ( meeting
Ford specification ESE-M97B44-A )
On a 1998 Ford Expedition : The thread on cap on your engine coolant reservoir is the pressure cap / radiator cap
On a 1998 Ford Expedition : The thread on cap on your engine coolant reservoir is the 16 PSI pressure cap / radiator cap
On a 1998 Ford Expedition : The thread on cap on your engine coolant reservoir is the 16 PSI pressure cap / radiator cap
The engine coolant drain plug, on a 1998 Ford expedition, is located on the bottom of the radiator. The drain plug will come out by turning to the left.
5 gallons
On a 2002 Ford Expedition : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
On a 2001 Ford Expedition : The thread on cap on your engine coolant reservoir is the ( 16 PSI ) pressue cap / radiator cap
The thread on cap on your engine coolant reservoir is the " radiator " cap
It should be on the passenger side next to the radiator.
A 2003 Ford Expedition will take 5 gallons to refill the radiator. Ford recommends you use Motorcraft Premium Gold engine coolant.
On a 2001 Ford Expedition : The thread on cap on your engine coolant reservoir is the pressure cap / radiator cap
The thread on cap on your engine coolant reservoir is the " radiator cap "