Generally, the steps are as follows:
1. Let the engine cool completely. This is extremely important to prevent burns from hot coolant. Wait at least an hour or more after driving.
2. Locate the coolant reservoir. This is usually a translucent plastic tank, often white or light-colored, with markings indicating minimum and maximum fill lines. It's often located under the hood, but its exact position varies slightly depending on the year and model of your Windstar. Your owner's manual will show you exactly where it is.
3. Identify the type of coolant. Your owner's manual will specify the correct type of coolant (often a 50/50 mix of antifreeze and distilled water, or a specific pre-mixed coolant). Using the incorrect coolant can damage your engine. Do not use tap water.
4. Add coolant. Carefully open the reservoir cap (it might have a pressure release mechanism). Add the coolant slowly, checking the level frequently to avoid overfilling. Fill the reservoir to the "MAX" line, but never above it.
5. Close the reservoir cap securely.
6. Check for leaks. After adding the coolant, inspect the area around the reservoir and hoses for any leaks.
7. Start the engine and let it run for a few minutes. This allows the coolant to circulate through the system. Monitor the temperature gauge to ensure the engine doesn't overheat.
8. Check the coolant level again after the engine has cooled down. Top up if necessary.
9. Dispose of old coolant properly. Coolant is toxic and should be recycled at an auto parts store or designated hazardous waste facility.
Important Considerations:
* Low Coolant Warning Light: If your Windstar's low coolant warning light is on, it indicates a significant coolant loss. Don't just add coolant; find and fix the leak first to avoid serious engine damage. A leak could be from a hose, radiator, or water pump.
* Overheating: If your engine overheats, pull over immediately and turn off the engine. Do not attempt to open the radiator cap or reservoir cap while the engine is hot. Let it cool completely before checking the coolant level.
* Professional Help: If you're uncomfortable performing this task yourself, or if you suspect a leak, take your Windstar to a qualified mechanic.
Remember: Always refer to your owner's manual for specific instructions and safety precautions for your particular year and model of Ford Windstar. Improper coolant maintenance can lead to costly engine damage.
