For a refrigerant line length of up to 15 meters, there is no need to add oil.
The oils indicated for lengths greater than 15 meters are CP32RH or CAPELA68 for R-22 gas and POE or 160SZ (synthetic) for R-407c gas, it is recommended to add oil according to the manufacturer's table.
Initial charge of oil by compressor: it is more or less 1.72 liters.
Never reuse the oil or use any oil that has been exposed to the atmosphere.
