There is an obsession on forums recently with the alleged need to have a camera regularly serviced, or CLA - if you prefer the word, - and no doubt there are many 'technicians' of varying degrees of skill ( and integrity! ) that are making a good living satisfying the demand. As a lifelong precision engineer I do appreciate the need for preventative maintenance, but unlike a motor or gearbox - etc. your camera does not have many constantly rotating and reciprocating componants under great stress, and has few parts that actually need a lot of grease or oil. If the camera has worn parts - due to heavy pro. use, by all means have it refurbished by a competant and reliable technician, but if it works smoothly - forget the 10,000 ml. service!.
Personaly I have never yet had one CLA'd in over forty years, and the two Nikkormat FT2's that have given exellent amatuer and semi-pro service since the seventies, have never yet been 'opened' yet feel smooth as silk!. The amount of cameras and especially lenses that seem to exude oil where they should'nt is increasing, and at camera fairs and sales are best left well alone!
Dave.