| Cooling System Capacity |
| 4.0L without auxiliary heater |
15.4 L (16.3 quarts) |
| 4.0L with auxiliary heater |
17.2 L (18.2 quarts) |
| 4.6L without auxiliary heater |
17.6 L (18.6 quarts) |
| 4.6L with auxiliary heater |
19.0 L (20.1 quarts) |
| Coolant Type |
| Motorcraft Premium Gold Engine Coolant VC-7-A (in California and Oregon VC-7-B, in Canada VC-7-C) or equivalent (yellow color) |
WSS-M97B51-A1 |
| Other Chemicals |
| Motorcraft Premium Cooling System Flush VC-1 |
ESR-M14P7-A |
| Motorcraft Cooling System Stop Leak Pellets VC-6 |
WSS-M99B37-B6 |
| Metal Surface Prep ZC-31 |
- |
| Cooling System Pressure Test |
| Cooling system |
138 kPa (20 psi) |
| Radiator Cap Pressure Test |
| Cap |
89-124 kPa (13-18 psi) |
| Thermostat Opening Temperature 4.0L SOHC |
| Starts to open |
90-94°C (194-201°F) |
| Fully open |
106°C (223°F) |
| Thermostat Opening Temperature 4.6L (2V) |
| Starts to open |
87-91°C (188-195°F) |
| Fully open |
100°C (212°F) |