During Component Replacement
When replacing components other than (or in addition to) the compressor, oil must be added to new component to maintain system charge at 9-10 ounces. If evaporator is replaced, add 2 ounces to new evaporator prior to installation. If condenser is replaced, add one ounce to new condenser. If filter-drier is replaced, add one ounce to new filter-drier.