Does your BUDDY have an owners manual? If so, the required information is located on pages 223-224. Is your BUDDY's 1997 Explorer a 2WD or 4WD? If 2WD, then it has one differential, if 4WD, then it has two. Anyways, here you go...
Capacities and specifications
Front axle fluid Motorcraft SAE 80W90 Axle Lubricant 4 x 4 vehicles 1.7 (3.5 pints)
Rear axle fluid1,2,3,4 Motorcraft SAE 80W90 Axle Lubricant Vehicles with conventional
Axles 2.9-3.1 (5.50-5.80 pints) Motorcraft SAE 75W140 High Performance Synthetic Rear
Axle Lubricant Refer to footnotes 2 and 3.
1 Fill to 3 mm (1⁄4” to 9/16”) below bottom of fill hole.
2 Vehicles equipped with 4.0L SOHC and 4.0L EI engines may have a limited slip differential. If
your vehicles is equipped with a limited slip differential, add 4 ounces of additive friction modifier
C8AZ-19B546-A, Ford specification EST-M2C118–A, for complete refill of 8.8 inch and 9.75 inch rear
3 Vehicles equipped with 4.0L SOHC or 4.0L EFI engines and 3.73 or 4.10 rear axle ratios or 5.0L engines require synthetic rear axle lubricant. Rear axles containing synthetic lubricant are lubricated for life. These lubricants are not to be checked or changed unless a leak is suspected, service required or the axle assembly has been submerged in water. The axle lubricant should be changed any time the axle has been submerged.
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