iv Martin W. Stockel was a leader in the field of industrial and vocational education. He grad- uated from San Jose University in San Jose, California, with a degree in Industrial Arts and Vocational Education, and completed additional coursework at Humboldt State University in Arcata, California, and Gorham Teacher’s College in Gorham, Maine. Mr. Stockel was employed as an industrial arts instructor for 18 years, teaching automotive technology, welding, drafting, and woodworking before becoming a school administrator. In addition to writing textbooks, Mr. Stockel was a contributor to both Popular Mechanics and Popular Science magazines. Martin T. Stockel received his degree from College of the Redwoods in Eureka, California, and completed additional automotive-related coursework at Humboldt State University in Arcata, California. He honed his automotive skills by working as a service technician at independent shops and automobile dealerships. In addition to Auto Fundamentals, Mr. Stockel is the coauthor of several automotive technology titles, including Auto Brakes and Auto Suspension and Steering. Chris Johanson has been involved in the automotive service business for more than 35 years, as a technician, instructor, and author. He has a bachelor’s degree in Industrial Arts Education and has written several books on the subject of automotive technology. Mr. Johanson is an ASE-certified master technician and also has ASE certifications in Advanced Engine Performance, Light Vehicle Diesel Engines, Light-Duty Hybrid Electric Systems, Refrigerant Recovery and Recycling, Auto Maintenance and Light Repair, and Undercar Specialist Exhaust Systems. The author and publisher wish to thank the following industry and teaching professionals for their valuable input into the development of Auto Fundamentals. About the Authors Reviewers Th omas Garrett Arbor View High School Las Vegas, NV Anthony Greco Milliken Technical Center Oakdale, NY Dennis Hannan Colby High School Colby, WI Jonathan Herndon Amistad High School Indio, CA David Jones Ivy Tech Community College—Fort Wayne Fort Wayne, IN Danica Kelso Georgian College Barrie, Ontario, CAN John Maher Seneca Valley High School Germantown, MD David Masters Apollo High School Saint Cloud, MN Th omas Mehrl American School Lansing, IL Kevin Valentino Sylmar High School Sylmar, CA