The previous batch's differential fluid results serve as a reference only; this batch still has to be checked against the actual material. The closeout spot check should go back over the drive type, the axle label, and the fluid change requirement, and confirm that the corrected document has replaced the old file and reached every user. Where two-wheel-drive and four-wheel-drive service items get mixed up, do not overwrite the earlier data; placing old and new records side by side shows where the problem came from. This international vehicle delivery guide helps check the related milestones before differential fluid responsibility is confirmed. Review the differential fluid checklist after the first batch closes.