* New coolant reservoir: Make sure you get the correct replacement part for your specific Sable model.
* Flathead screwdriver or pliers (possibly): Depending on how the reservoir is secured, you might need these to remove retaining clips or clamps.
* Rags or shop towels: To clean up any spilled coolant.
* Gloves: Engine coolant can be irritating to skin.
* Funnel: To easily pour the new coolant in.
* Optional: A flashlight to better see in tight spaces.
It's a relatively straightforward job, but before you start, consult a repair manual specific to your 2001 Mercury Sable. This will provide detailed instructions, diagrams, and torque specifications (if applicable) to ensure you do the job correctly and safely. A Haynes or Chilton manual would be helpful. You can also often find videos online demonstrating the process for similar vehicles.