As long as the system is intact, not leaking and working there is no reason to alter the system. Everything worked on mine last year, but wouldn't cool. $50.00 worth of R-12 had me putting out 41F at the center vents and the steering wheel would be too cold to hold between the office and the house.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.