Brake fluid

The fluid level will drop slowly as the brakes wear, and will rise when the brake components are replaced.
Fluid levels between the MIN and MAX lines are within the normal operating range; there is no need to add fluid. If the fluid levels are outside of the normal operating range, the performance of the system could be compromised; seek service from your authorized dealer immediately.

See also:
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality, per the recommendations in the Choosing the right
fuel section. ...
Going & Stopping
The MKX's drivetrain is another high point, with a 3.5-liter V-6 generating
265 horsepower at 6,250 rpm and 250 pounds-feet of torque at 4,500 rpm. The
transmission is a six-speed automatic develo ...
Brakes
Occasional brake noise is normal. If a metal-to-metal, continuous grinding
or continuous squeal sound is present, the brake linings may be worn-out
and should be inspected by an authorized dealer. ...
