Technical guidance

The likelihood of seizing increases significantly if the brake fluid is not changed on schedule. Because the fluid is hygroscopic, its moisture content rises over time, and that moisture corrodes the pistons and cylinders.

If the fluid is too viscous, the piston does not return to its original position after braking. Pistons made of polymer or composite materials may also swell after contact with an unsuitable fluid.

Change the brake fluid on schedule. It is hygroscopic, so the amount of moisture in it keeps increasing over time. This not only reduces braking efficiency but also causes internal corrosion of the pistons.