Subaru: Complete Service Undecar/Underhood: Every car needs routine service, even Subaru's reliable lineup of vehicles. Import Specialist Contributor Larry Bailly offers guidelines for successfully selling preventive maintenance. A good place to start? Get to know your customers' needs, not just the recommended maintenance schedule for their vehicles. Tech Feature: Preventing Brake Noise Undercar: You've probably heard that a non-directional rotor finish can lessen the risk of new brake pads squealing. It can, but do you really need to apply a non-directional finish to freshly turned rotors? And what about new rotors? Should you give them a non-directional finish if they don't have one? Technical Editor Larry Carley takes a closer look at rotor refinishing. Diagnostic Solutions: Charging System Underhood:Although checking charging voltage at the battery terminals is the most popular methodod for testing an alternator, a charging voltage test seldom reveals less common problems like cranking/no-start complaints. Import Specialist Contributor Gary Goms discusses voltage regulator basics, as well as computer controlled systems, to help you tackle charging system problems.