Hello, I have a question about my A/C system. Does anyone know how much refrigerant oil does a new compressor and an accumulator take as I will be replacing both (from empty)? I can't drain out the old refrigerant and see because the guy already drained it from the compressor and did not want to continue. I believe the system takes 8 oz pag from empty. If this is correct, how much should I add the compressor and accumulator. is it 1/2 and 1/2 in each or less in the accumulator. NOTE: I will be flushing the whole system.