Keeping your car or pickup truck in good operating condition will likely include keeping your brake calipers clean. In order for your brakes to work effectively, the caliper jaws must be able to close efficiently. Check the calipers on a regular basis.
When to Check Your Calipers
Each time your car is raised to change oil, or to rotate your tires, check your brake pads; you should check your calipers to be sure they are clean enough to work efficiently. If you operate your vehicle in a wet climate, in mud, loose soil, or in gravel, you should check the brake calipers for foreign matter.