Lincoln 1997 Town Car Owner's Manual page 228

WARNING
Never remove the coolant recovery cap
while the engine is running or hot.
If you must remove the coolant recovery cap,
follow these steps to avoid personal injury:
1. Before you remove the cap, turn the engine off
and let it cool.
2. When the engine is cool, wrap a thick cloth
around the cap and turn it slowly,
counterclockwise to the first stop.
3. Step back while the pressure releases.
4. When you are sure that all the pressure has
been released, use the cloth to press the cap
down, turn it counterclockwise, and remove it.
Use Ford Premium Cooling System Fluid
E2FZ-19549-AA (in Canada, Motorcraft CXC-8-B) or
an equivalent premium engine coolant that meets
226
Ford specification ESE-M97B44-A. Ford Premium
Engine Coolant is an optimized formula that will
protect all metals and rubber elastomers used in
Ford cooling systems for 4 years or 50,000 miles
(80,000 km).
Do not use alcohol or methanol antifreeze or any
engine coolants mixed with alcohol or methanol
antifreeze. Do not use supplemental coolant
additives in your vehicle. These additives may harm
your engine cooling system. The use of an improper
coolant may void the warranty of your vehicle's
engine cooling system.
Recycled engine coolant
Ford Motor Company recommends that Ford and
Lincoln-Mercury dealers use recycled engine coolant
produced by Ford-approved processes. Not all
coolant recycling processes produce coolant which
meets Ford specification ESE-M97B44-A, and use of
such coolant may harm engine and cooling system
components.