Had my evaporator coil replaced today. It sprung a leak on the last day of the cooling season last year. I don't know how much compressor oil was lost but I would guess there was 1/3 to 1/2 cup in the coil drain pan. I asked the tech if he was going to add some oil with the refrigerant and he said absolutely not because there was not any way to judge how much he should add. He said if he added too much the compressor would fail almost immediately. If there is too little, the compressor would eventually fail but I would at least get another season or two out of it. But probably there was enough oil left in the compressor that all would be well.
Does this sound right?