Tools and Materials You'll Need:
* New coolant: Use the correct type and amount specified in your owner's manual. This is usually a 50/50 pre-mix of coolant and distilled water, or you may need to mix it yourself. Check your owner's manual for the correct type (e.g., Dex-Cool, etc.).
* Drain pan: A large capacity one is best to avoid spills.
* Wrench(es): You'll need wrenches to access the drain plug and possibly the coolant reservoir cap. Sizes may vary depending on your vehicle's specifics. Check your owner's manual or look under the car to identify the drain plug size.
* Funnel: To avoid spills when refilling.
* Gloves: To protect your hands from the hot coolant.
* Safety glasses: To protect your eyes from splashes.
* Hose clamps (optional): If you plan on replacing the lower radiator hose as well.
* New radiator hose (optional): A good idea to replace it while you're working on the coolant system, as old hoses can be brittle and leak.
* Jack and jack stands (recommended): Provides better access to the drain plug. Never work under a vehicle supported only by a jack.
Procedure:
1. Safety First: Let the engine cool completely. Hot coolant can cause severe burns. Allow several hours after driving.
2. Locate Drain Plug: The engine block drain plug is typically located at the lowest point of the engine block. This is usually on the passenger side, near the bottom of the engine. Consult your repair manual or online diagrams for the exact location.
3. Prepare for Draining: Place the drain pan under the drain plug.
4. Drain the Coolant: Carefully loosen and remove the drain plug. The coolant will drain into the pan. Be prepared for a fair amount of coolant (several gallons).
5. Remove Radiator Cap: Once the coolant has mostly drained from the engine block, remove the radiator cap (after the system is completely cool). More coolant will drain out.
6. Optional: Flush the System: For a more thorough cleaning, you can flush the system with clean water. Fill the radiator and run the engine for a few minutes, then drain again. Repeat this process until the water runs relatively clear.
7. Replace Drain Plug: Once draining is complete, replace the drain plug and tighten it securely. Don't overtighten.
8. Refill the Radiator: Using a funnel, carefully add the new coolant mixture to the radiator. Refer to your owner's manual for the correct amount.
9. Refill the Overflow Reservoir: Add coolant to the overflow reservoir, until it reaches the "full" or indicated level.
10. Bleed the Air: Run the engine for a few minutes with the radiator cap OFF. This allows air bubbles to escape. You should see coolant circulating in the radiator. Add more coolant as necessary to keep the radiator full. Once the thermostat opens and coolant begins flowing through the system, you'll see more efficient air expulsion.
11. Replace Radiator Cap: Once the engine has run for a few minutes and the coolant level is stable, replace the radiator cap.
12. Check for Leaks: Inspect the system for any leaks around the drain plug, hoses, and the radiator itself.
13. Check Coolant Level: After the engine has cooled completely, check the coolant level in the overflow reservoir and top it off if necessary.
Important Notes:
* Consult your owner's manual: This guide provides general instructions. Your owner's manual will have specific instructions and recommendations for your 1999 Lincoln Town Car.
* Disposal: Dispose of the old coolant properly according to your local regulations. It's hazardous waste. Auto parts stores often accept used coolant for recycling.
* Professional help: If you're uncomfortable performing this task yourself, take your vehicle to a qualified mechanic.
This is a complex procedure, and mistakes can lead to overheating and engine damage. If you're not comfortable performing this repair yourself, it is best to have a professional mechanic do it. Your safety and the well-being of your vehicle should always be prioritized.
