On a 1997 Ford Taurus the thread on cap on the engine coolant reservoir is
the pressure cap / radiator cap
On a 1997 Ford Taurus : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
On a 1998 Ford Taurus : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
On a 1998 Ford Taurus : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
On a 1998 Ford Taurus : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
The 1999 Ford Taurus does not have a radiator cap. Coolant is added by using the over flow bottle instead of a radiator cap.
The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
On a 1998 Ford Taurus : ( the thread on cap on your engine coolant reservoir is the 16 PSI pressure cap/ radiator cap )
The thread on cap on your engine coolant reservoir is your pressure cap / radiator cap ( 16 PSI ) on a 1996 Ford Taurus ( all engines )
The thread on cap on your engine coolant reservoir is the pressure cap / radiator cap
On a 1997 Lincoln Town Car : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
For a 2002 Ford Taurus : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap ( I believe the Motorcraft part number is RS-103 ) it's a 16 PSI cap
Your radiator cap is made of metal and rubber. The metal and rubber are reacting to the rust in your radiator. Rust and oxidation in your radiator will deteriorate the cap at an accelerated rate. I suggest flushing the cooling system and replacing the coolant and cap. If it persists after that you might have a heat problem that is cooking the rubber right off the radiator cap. If this is the case you should check your thermostat and heating Coil.