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March 1, 2000 Service bulletin

Some vehicles may exhibit an oil leak from the inside diameter of the rear axle pinion oil seal

Ford technical service bulletin 8423 for 2000-2001 Ford Explorer and 2000-2001 Mercury Mountaineer.

Bulletin number
8423
Component
Power train: axle assembly: axle shaft: seal
Summary
Some vehicles may exhibit an oil leak from the inside diameter of the rear axle pinion oil seal. Tt

Owners of these vehicles have filed 191 complaints in the transmission category.

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