July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Front Brake Caliper Installation Note

WARNING: This page is about a different car, the 2021 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Clean the exposed area of the piston.
Apply grease to the locations shown in the figure.

Courtesy of MAZDA MOTORS CORP.
Install the front brake caliper.