12-13-79-610-011-A - Check Oil Level and Replenish.
Reason for the Job:
This task gives the instructions necessary to fill the engine oil tank if the oil level has decreased during normal engine operation. [...]
(A). Check the engine oil level.
(4) Servicing is not required prior to departure if the engine was serviced on arrival or the oil tank sight glass shows a minimum of 23 quarts or the cockpit indication shows a minimum of 19 quarts and predeparture walkaround checks confirm no oil pools/drips from drain mast. [...]
(B). Fill the engine oil tank - Gravity Filling:
(2) Make sure that the oil level sight glass shows FULL.
NOTE: Do not fill the oil tank past the sight glass FULL level. Filling to tank overfill will result in excess oil, leading to amber cross indication warnings and service disruption.
Question: Why is there a difference in requirements in paragraph (A-4) and (B-2)? Whichever is correct?