The CV (Constant Velocity) boots should be checked for damage each time the oil is changed and whenever the vehicle is raised for service, as they prevent water, grime, dirt, and other damaging materials from entering the CV joints, which could lead to costly early CV-joint failure. Signs of a torn boot include heavy grease around the inside of the front wheel(s) and on the brake caliper/drum. It is important to thoroughly inspect the boots for missing clamps and tears, and any damaged boot should be replaced immediately.