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Fluid Ford Part
Name
Application Capacity
Front axle
lubricant
Motorcraft SAE
80W-90
Premium Rear
Axle Lubricant
4x4/AWD
vehicles
1.3L (1.4
quarts)
Rear axle
lubricant
4
Motorcraft SAE
75W-140 High
Performance
Synthetic Rear
Axle Lubricant
Conventional
Axle
1.7L (3.5 pints)
Windshield
washer fluid
Motorcraft
Ultra-Clear
Windshield
Washer
Concentrate
All 4.0L (4.2
quarts)
1
Ensure the correct automatic transmission fluid is used. MERCON and
MERCON V are not interchangeable. DO NOT mix MERCON and
MERCON V. Refer to your scheduled maintenance guide to determine
the correct service interval.
2
Indicates only approximate dry-fill capacity. Some applications may vary
based on cooler size and if equipped with an in-tank cooler. The amount
of transmission fluid and fluid level should be checked by a qualified
technician.
3
Add the coolant type originally equipped in your vehicle.
4
All rear axles are filled with Motorcraft SAE 75W-140 High Performance
Synthetic Rear Axle Lubricant, part number XY—75W140–QL or
equivalent meeting Ford Specification WSL-M2C192–A.
5
Use of synthetic or synthetic blend motor oil is not mandatory. Engine
oil need only meet the requirements of Ford specification
WSS-M2C153–H and the API Certification mark.
2003 Aviator f/k/a Navigator LS (231)
Owners Guide (post-2002-fmt)
USA English (fus)
Maintenance and Specifications
322