Lincoln AVIATOR 2023 Owner's Manual page 478

Materials
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant(U.S.)
Motorcraft® SAE 75W-140 Synthetic Rear Axle Lubricant / Lubrifiant synthétique
pour pont arrière SAE 75W-140 Motorcraft®(Canada)
XY-75W140-QL(U.S.)
CXY-75W140-1L(Canada)
Rear Axle
Capacities
All.
Capacities and Specifications
Name
Variant
475
Specification
WSL-M2C192-A
Quantity
1.9 qt (1.8 L)