All, I have searched for a temperature/pressure chart for a W124 R-12 system and can only find reference to a ~40 degree temp delta. Anyone know where one can be located? I just repaired a leak on my '90 300e. I bought a vac pump, evacuated the system, left it overnight at 27", still same reading in the morning. I got 2 14oz. cans of R-12 in her, the third can ruptured while adding, so I think I am still low. Sticker calls for 1.1kg coolant. My high side runs up to 250, then the fans kick on and drops to 180, repeats the process. Low side ~35. I was getting 58 degrees vent temp at 89 outside temp.