Draining and Filling

1. With the engine OFF and sufficiently cool, remove pressure relief cap, open radiator draincock (8115) and remove the cylinder block drain plugs and allow coolant to drain.
2. Close radiator draincock. Hand-tighten.
3. Check all hose clamps for proper tightness and location. Make sure radiator draincock is closed and cylinder drain plugs are installed.
4. Remove heater water hose (18472) from heater outlet tube at rear of RH cylinder head (6049).

NOTE: Its important to maintain engine coolant concentration between 40%,-24°C (-11°F) and 60%, -52°C (-62°F) depending on climate conditions. Below 40%, there is a loss of freeze protection. Above 60%, the engine may overheat on a warm day. Outside this range, protection against rust and corrosion may be greatly reduced.

5. Fill degas bottle with a 50/50 mixture of Ford Premium Cooling System Fluid E2FZ-19549-AA or-B (in Oregon, F5FZ-19549-CC, in Canada, Motorcraft CXC-8-B) or equivalent meeting Ford specification ESE-M97B44-A and water until the mixture flows out of the heater outlet tube.
6. Install heater water hose to heater outlet tube. Install hose clamp securely.
7. Fill degas bottle to the COLD-FILL with a 50/50 mixture of specified coolant and water.
8. Place heater temperature selector in MAXIMUM heat position.

WARNING: TO AVOID THE POSSIBILITY OF PERSONAL INJURY OR DAMAGE TO THE VEHICLE, DO NOT OPERATE ENGINE WITH HOOD (16612) OPEN UNTIL FAN BLADE (8600) HAS BEEN FIRST EXAMINED FOR POSSIBLE CRACKS AND SEPARATION.

9. Install the pressure relief cap and run engine until water thermostat (8575) opens (coolant flowing through upper radiator hose (8260) becomes hot).
10. Stop engine and allow to cool. Carefully remove pressure relief cap.
11. Add a 50/50 mixture of and water to the COLD FILL LEVEL mark on the degas bottle through the filler opening at the top of the degas bottle.
12. Install pressure relief cap. Check for leaks.