Ford 2006 Zephyr Owner's Manual page 223

Maintenance and Specifications
2. When the engine is cool, wrap a thick cloth around the coolant
pressure relief cap on the coolant reservoir (an opaque plastic bottle).
Slowly turn cap counterclockwise (left) until pressure begins to release.
3. Step back while the pressure releases.
4. When you are sure that all the pressure has been released, use the
cloth to turn it counterclockwise and remove the cap.
• 2.3L coolant bleed valve
• 3.0L coolant bleed valve
5. Open the coolant bleed valve on the back of the engine water outlet
for the 2.3L engine or the coolant bleed valve located on the upper
radiator hose for the 3.0L engine.
6. Fill the coolant reservoir slowly with the proper coolant mixture (see
above), to within the "COLD FILL RANGE" or the "FULL COLD" level on
the reservoir.
7. Close the bleed valve and reinstall the cap on the coolant reservoir.
Turn the cap until it is tightly installed to prevent coolant loss.
After any coolant has been added, check the coolant concentration.
Refer to the Checking engine coolant section. If the concentration is
not 50/50 (protection to –34° F [–36° C]), drain some coolant and adjust
the concentration. It may take several drains and additions to obtain a
50/50 coolant concentration.
223
2006 Zephyr (378)
Owners Guide (post-2002-fmt)
USA (fus)