Shop Ford C-Max Engine Coolant Antifreeze Price. Explore Ford C-Max Engine Coolant / Antifreeze & Ford C-Max Engine Coolant. Maintaining the engine coolant/antifreeze in your Ford C-Max is crucial for preventing overheating and corrosion. To extend its lifespan, routinely check levels and look for discoloration or sediment, which suggests it's time for a replacement. When selecting a new coolant, opt for a product that meets Ford's specifications?either a premium OAT (Organic Acid Technology) or a hybrid OAT coolant, both designed for long-lasting protection and compatibility with Ford engines. Remember, the correct coolant ensures optimal thermal regulation and material integrity. For seamless installation, always follow the vehicle's maintenance guide, and consider using a funnel to avoid spills, keeping your C-Max in peak condition.