This Owners Manual is nicely packaged in a leather hold case. All the manuals include are extremely helpful in servicing the 1992 M30 and related Q45 Infiniti cars. This was the most extensive series of books to define all parts and know how they work and where they are located. Clear explanations on how to service and solve problems to properly maintain these vehicles. Why go online when almost every part and its functioning are explained in detail in this assortment of manuals.