Walt, In my DMC manual under General Data page A:05:01 it shows 2.5 lbs of R-12. I had mine serviced by a good friend (a licenced A/C engineer). He pumped out the system and then refilled it with 2.5lbs of R-12. That was 3 years ago and it is still cooling nicely. Good luck Bill #2517 [Non-text portions of this message have been removed]