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The Ford Fusion requires dot 4 brake fluid, which is crucial to safeguard the metal parts inside key components like calipers, wheel cylinders, master cylinders, and ABS control valves. This type of fluid must protect against corrosion caused by moisture infiltration. Corrosion inhibitors are mixed into the base brake fluid to ensure this protection. Neglecting to replace your brake fluid according to the manufacturer's recommendations can result in moisture contamination in your brake reservoir. Failing to change the brake fluid will significantly hinder your car's braking abilities, resulting in poor braking performance.
Earlier today, I noticed that my 2017 Ford Fusion Titanium's brake fluid cap clearly states DOT4.
The Ford Fusion of 2017 utilizes DOT 3 brake fluid.