This is an interesting topic. I have a '90 300SL with 190 K. I recently brought it to a MB dealer and enquired as to whether the timing chain needs to be inspected and was advised that it there was no need for this service.

Given all of the problems and advice that I've read in this forum, why is MB so stubborn about insisting that that timing chains service is unnecessary?

Also, I need to repair my AC. Does anyone know of a reputable independant MB tech. in the Toronto, Canada area? I would appreciate any recommendation because I am not entirely convinced that I am getting value for the service provided by the dealer. Lastly, does anyone have any experience with non-OEM AC parts or rebuilts for an AC, if such parts exist?