4 CD Silver - Best Practice Maintenance and Engineering Reliability Training Program consisting of the following: 1 x in-house, do-it-yourself reliability training program CD. 1 x ‘Maintenance Bible’ CD with 150 best practice articles full of everyday engineering and maintenance knowledge and advice. 1 x 18+ best practice e-books CD. 1 x Do-It Simulations bearing lube care simulation CD. UNLIMITED distribution of every CD and e-book content throughout your facility. Free ‘The Maintenance WAR’ Newsletter.