The Ford Fusion uses dot 4 brake fluid. Car brake fluid is designed to protect the metals used inside components such as calipers, wheel cylinders, master cylinders, and ABS control valves. The fluid must also protect against corrosion as moisture enters the system. Additives (corrosion inhibitors) are added to the base brake fluid to help accomplish this.If You don't have Your Brake Fluid changed as recommended by Your vehicle manufacturer this will lead to Moisture Contamination in Your brake reservoir where the Brake Fluid is stored. When You don't change Your brake fluid, Your cars braking capabilities suffer greatly for it leading to Poor Braking Performance.
Right on the brake fluid cap on my 2017 Ford Fusion Titanium it specifically says DOT4. I looked at it just this morning.
Marshall D
July 16, 2020
The 2017 ford fusion uses dot 3 brake fluid
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