On a 2001 Lincoln Navigator :
The thread on cap on the engine coolant reservoir is the pressure cap /
radiator cap
On a 1998 Lincoln Navigator : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
The thread on cap on your engine coolant reservoir is the pressure cap ( radiator cap )
On a Lincoln LS : The engine coolant reservoir is located in the engine compartment , on the drivers side , near the firewall ( I believe it has a thread on cap , which would be the pressure cap / radiator cap )
On a 2003 Lincoln Aviator : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
On a 1995 Lincoln Continental : The thread on cap on your engine coolant reservoir is the pressure cap / radiator cap
The 2001 Windstar has no radiator cap. It has an antifreeze bottle.
On a 1994 Lincoln Town Car : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
On a 1997 Lincoln Town Car : The thread on cap on your engine coolant reservoir is your pressure cap / radiator cap
On a 1994 Lincoln Town Car : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
On a 1993 Lincoln Town Car : The threaded cap on the engine coolant reservoir is the pressure cap / radiator cap
If you raise the hood of your 2001 Lincoln navigator, go to the passenger side , right against the fire wall directly under the two air conditioner lines "aluminum colored " may have a black cap and be hard to see
On a 2001 Ford Expedition : The thread on cap on your engine coolant reservoir is the pressure cap / radiator cap