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post #8 of (permalink) Old 12-09-2010
wmburns
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V6 3.8 coolant re-filling procedures

If the vent is opened while the engine is running, this guarantees air will be drawn into the system. The vent is opened only when the motor is not running while coolant is being added.

Note in the procedures, it calls for the motor to be COLD when the vent is opened during re-checks. This is important.

Again, the V6 WILL overheat unless all air is removed from the motor. Any air trapped wiill collect at the T-stat. This will keep the t-stat from reading the correct coolant temperature thus delaying t-stat opening.

Further, the air will block the flow of coolant.

>>
Filling 3.8L
CAUTION: Some vehicle cooling systems are filled with Motorcraft Premium Engine Coolant VC-4-A (in Oregon VC-5, in Canada CXC-10) or equivalent meeting Ford specification ESE-M97B44-A (green color). Others are filled with Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) or equivalent meeting Ford specification WSS-M97B51-A1 (yellow color). Always fill the cooling system with the same coolant that is present in the system. Do not mix coolant types.
CAUTION: Engine coolant provides freeze protection, boil protection, cooling efficiency, and corrosion protection to the engine and cooling components. In order to obtain these protections, the engine coolant must be maintained at the correct concentration and fluid level in the degas bottle.
When adding engine coolant, use a 50/50 mixture of engine coolant and clean, drinkable water.
To maintain the integrity of the coolant and the cooling system:
NOTE: The addition of Motorcraft Cooling System Stop Leak Pellets, VC-6, darkens Motorcraft Premium Gold Engine Coolant from yellow to golden tan.
Add Motorcraft Premium Engine Coolant VC-4-A (in Oregon VC-5, in Canada CXC-10) or equivalent meeting Ford specification ESE-M97B44-A (green color), or Motorcraft Premium Gold Engine Coolant VC-7-A (in Oregon VC-7-B) or equivalent meeting Ford specification WSS-M97B51-A1 (yellow color). Use the same coolant that was drained from the cooling system. Do not mix coolant types.
Do not add/mix orange-colored Motorcraft Speciality Orange Engine Coolant VC-2 or equivalent meeting Ford specification WSS-M97B44-D. Mixing coolants may degrade the coolant's corrosion protection.
Do not add alcohol, methanol, or brine, or any engine coolants mixed with alcohol or methanol antifreeze. These can cause engine damage from overheating or freezing.
Do not mix with recycled coolant unless it meets the requirements of Ford specification ESE-M97B44-A or WSS-M97B51-A1. Not all coolant recycling processes meet these Ford specifications. Use of such coolants can harm the engine and cooling system components.
Place the heater temperature selector in the maximum heat position.
CAUTION: On 3.8L engines, the vent plug must be removed before radiator fill or the engine may not fill completely.
NOTE: It is important to maintain engine coolant concentrate between 40 percent or -24C (-11F) and 60 percent or -52C (-62F).
Fill the engine cooling system with 50/50 mixture of water and engine coolant.
After filling the engine cooling system, add coolant to the vent until full. Install the vent plug.
Leave the pressure relief cap off and run the engine until it reaches normal operating temperature.
Stop the engine and add the correct engine coolant mixture to the degas bottle/coolant expansion tank until the coolant level is between the COOLANT FILL LEVEL marks.
Turn the engine off and allow the cooling system to cool. Check the level in the degas bottle/coolant expansion tank, and add a 50/50 mix as needed.

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