Here's a general procedure. Consult your owner's manual for specific locations and procedures for your particular model. There might be slight variations depending on the engine (4.6L or 5.0L).
Tools You'll Need:
* Drain pan: A large capacity pan to catch the coolant. At least 5 gallons.
* Wrench: Likely a socket wrench, possibly a 1/2" drive, to loosen the drain petcock (if present) or the lower radiator hose clamp.
* Pliers or Screwdriver: If the drain petcock is a screw type.
* Gloves: To protect your hands from the coolant.
* Safety Glasses: To protect your eyes.
* Optional: Funnel: To help guide the coolant into the drain pan.
Procedure:
1. Locate the Drain Points: The 1993 Town Car likely has a drain petcock (a small valve) at the bottom of the radiator. It might also have a drain plug on the engine block itself (check the bottom of the engine near the thermostat housing). The lower radiator hose is another option, but this can be messier.
2. Position the Drain Pan: Place the drain pan under the radiator drain petcock or the lower radiator hose.
3. Open the Drain:
* Radiator Drain Petcock: If present, carefully loosen and remove the petcock using the appropriate wrench or pliers.
* Engine Block Drain Plug: If present, carefully loosen and remove the plug.
* Lower Radiator Hose: This is a less ideal method as it can be messier and potentially damage the hose. Use a wrench to loosen the hose clamp, then carefully remove the hose from the radiator.
4. Drain the Coolant: Let the coolant drain completely. This can take some time.
5. Close the Drain: Once drained, replace the petcock or drain plug, tightening securely but not over-tightening. If you removed the lower radiator hose, carefully reattach it and tighten the clamp.
6. Refill the Cooling System: After the drain is closed, carefully refill the cooling system using the correct coolant/water mixture as specified in your owner's manual (usually a 50/50 mix of coolant and distilled water). Add coolant through the radiator fill neck until it reaches the appropriate level (usually indicated by a "low" and "full" mark).
7. Run the Engine: Start the engine and let it run for a few minutes to circulate the coolant. Check for any leaks. Turn the engine off and allow it to cool.
8. Top Off: Check the coolant level again and top it off if necessary.
Important Notes:
* Coolant is toxic: Handle it carefully and avoid skin contact. Dispose of used coolant properly according to your local regulations. Auto parts stores often have coolant recycling programs.
* Different Coolants: Use the correct type of coolant for your vehicle. Using the wrong type can damage your engine. Your owner's manual should specify the recommended coolant.
* Air Pockets: Air pockets can form in the cooling system after draining and refilling. This can lead to overheating. Refer to your owner's manual for bleeding the cooling system (removing trapped air). Some vehicles require specific procedures to remove air pockets.
This is a general guide. Always consult your 1993 Lincoln Town Car owner's manual for the most accurate and detailed instructions for your specific vehicle. If you're not comfortable performing this task yourself, it's best to take your car to a qualified mechanic.
