Lincoln 2008 MKZ - Manual (Page 248)

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.
• 3.5L coolant bleed valve
5. Open the coolant bleed valve.
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 theChecking 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.
Whenever coolant has been added, the coolant level in the coolant
reservoir should be checked the next few times you drive the vehicle. If
necessary, add enough 50/50 concentration of engine coolant and
distilled water to bring the liquid level to the proper level.
If you have to add more than 1.0 quart (1.0 liter) of engine coolant per
month, have your authorized dealer check the engine cooling system.
Your cooling system may have a leak. Operating an engine with a low
level of coolant can result in engine overheating and possible engine
damage.
2008 MKZ (378)
Owners Guide (post-2002-fmt)
USA (fus)
Maintenance and Specifications
248