I have a York Comm. package unit, 4Tons, that has a scroll and the pressures range from 64 to 72 on low side, 240 to 275 on high side. I have no condensation to speak of. I have removed the compressor and recovered approx. 20 oz. of oil. I can say that the oil was not discolored. I then remove the orafice and purged the system with nitro. I didn't get very much oil. I even cut a hole in the lowest point of the common return of evap to find only a few more drops of oil. I changed out the filter drier and weighed in the charge. Now I have a swing of 70 to 72 and 260 to 275.
Still sounds like I have oil in the evap. ???? Is there a better way to remove this oil??? If I am thinking right or wrong someone tell me so. And the 100.00 question for me is why did it migrate. I did notice a new blower motor. Did the oil find its way there when it went down and froze the coil?