How do I Check and add Engine Coolant?

While an internal combustion engine generates power, it also produces significant heat. Engine coolant is essential for regulating this heat, maintaining the engine at its optimal operating temperature.

Proper coolant levels ensure peak vehicle efficiency, minimize emissions, and facilitate effective cabin heating during cold weather. To ensure vehicle longevity, it is recommended to check your coolant levels during every refueling. If you need to add coolant, please follow the professional guidelines below.

Pre-Service Requirements and Safety Precautions

Before beginning, please observe the following safety measures:

  1. Verify Coolant Specifications: Consult your Customer Assistance and Service Guide to identify the correct coolant for your specific engine. Note: Never mix different types of coolant, as this can lead to internal engine damage.
  2. Safety Attire: Secure or remove any loose clothing and keep your arms clear of the cooling fans. These fans may activate automatically, even when the engine is powered off.
  3. Temperature Warning: Never attempt to remove the coolant reservoir cap while the engine is running or hot. Allow the engine to cool completely before proceeding.
  4. Pressure Release: Always place a thick cloth or towel over the reservoir cap before opening, as the system remains under pressure.

How to Check and Add Engine Coolant

You can follow the steps below:

  1. Preparation: Ensure the engine is off and cool. The vehicle should be in Park or Neutral for manual transmission with the parking brake firmly engaged.
  2. Locate the Reservoir: Open the hood and identify the engine coolant reservoir. This is typically a translucent white container connected to the radiator by hoses.
  3. Assess the Level: Observe the fill range marked on the side of the reservoir. When the engine is cold, the coolant should reach the Cold Fill line.
  4. Open Carefully: Slightly loosen the reservoir cap to allow pressure to vent safely. Once the pressure is released, remove the cap entirely.
  5. Replenish: If the level is low, add the approved coolant directly into the reservoir (do not add it to the radiator). You may use pre-diluted coolant or a 50/50 mixture of concentrated coolant and distilled water.
  6. Secure the System: Once the fluid reaches the Cold Fill line, replace the cap and tighten it until you feel it click. Ensure the hood is securely closed.

For professional assistance or to purchase a Genuine Motorcraft® replacement coolant, please visit your local Dealership. For further technical specifications, refer to your Owner's Manual or Customer Assistance and Service Guide.