The 2018 Ford F-150 should use a Ford-approved coolant, most commonly the Motorcraft 50/50 premixed engine coolant, or an equivalent that is explicitly labeled as Ford-approved for the F-150. Do not rely on generic or non-Ford coolants unless the label confirms compatibility with Ford engines.
In detail, this requirement covers all 2018 F-150 configurations, including the 2.7L EcoBoost, 3.5L EcoBoost, and 5.0L V8. The goal is to protect aluminum and mixed-metal cooling passages while providing long-term corrosion protection. You can use premixed 50/50 coolant, or buy concentrate and mix it with distilled water to achieve a 50/50 ratio, as long as the product is Ford-approved for this vehicle.
Recommended coolant options
Here are the practical choices you’ll typically find and what to look for when shopping:
- Motorcraft Premium Engine Coolant (50/50 Premixed) – Ford’s official coolant, designed for Ford engines and cooling systems.
- Motorcraft Engine Coolant Concentrate – Ford-approved concentrate to mix with distilled water to a 50/50 blend.
- Other brands labeled as Ford-approved for Ford engines or explicitly meeting Ford specifications – ensure the product states compatibility with Ford vehicles and a 50/50 mix.
- Avoid universal or non-Ford coolants unless the label clearly confirms compatibility with Ford engines.
These options align with Ford’s guidance to use a compatible coolant that provides corrosion protection for aluminum and other metals in the cooling system.
How to fill and maintain the cooling system
If you’re changing the coolant yourself, follow these steps to ensure a proper fill and air bleed:
- Park on a level surface and let the engine cool completely to avoid burns from hot coolant or steam.
- Place a drain pan under the radiator drain valve and open it to drain the old coolant. Dispose of used coolant at a proper recycling facility.
- Optionally flush the cooling system with clean water to remove debris, then drain again and close the drain plug.
- Fill the system with the chosen coolant: either premixed 50/50 or concentrate mixed with distilled water to 50/50, until the radiator is full. Then fill the overflow reservoir to the correct level.
- With the radiator cap off, start the engine and allow it to reach operating temperature to help bleed air from the system. Add coolant as needed to maintain the correct level.
- Shut off the engine, let it cool, and recheck the coolant level. Reinstall the radiator cap and check for any leaks.
Always follow local disposal regulations for used coolant and never mix antifreeze with other automotive fluids.
Compatibility notes
Color is not a reliable indicator of compatibility. Always verify that the coolant is Ford-approved for the 2018 F-150 and labeled for use in Ford engines. If you’re unsure, consult your owner’s manual or contact a Ford dealer or certified mechanic before purchasing or mixing fluids.
Summary
For a 2018 Ford F-150, the safest route is to use Ford-approved Motorcraft coolant, typically the 50/50 premixed formulation, or Motorcraft concentrate that you mix with distilled water to 50/50. You can also use another brand that clearly states Ford compatibility. Always follow the owner’s manual for exact specifications and bleeding procedures, and have the coolant system inspected if you notice leaks, overheating, or unusual temperature readings.