Wear on rear axle shafts may cause excessive play and gear oil leaks on Ford Crown Victoria

Wear on the rear axle shafts near the bearings can create excessive play and lead to gear oil leaking past the seals. Gear oil will leak onto the brake backing plate, brakes, and wheels.
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Average mileage: 146,333 (92,000–188,000)
5 model years affected: 1999, 2000, 2002, 2005, more2008
11 people reported this problem
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problem details
2005 Ford Crown Victoria 149,000 mi,
About a month ago I noticed a lot of grease/oil on my passenger side rear wheel and brakes. I don't think it had been leaking very long since I wash the car/wheels every 2 weeks and hadn't seen it then. I'm a member of an internet Crown Victoria/Grand Marquis group and searched their threads, coming to the conclusion that at the least my rear seal is leaking, maybe bearing needs replacing. Apparently this is not something you want to put off since it can ruin the axle and become quite costly. Went to a shop I trust this morning for an estimate but unfortunately they won't know how much needs replacing until they take it apart. He said maybe $500 incl. labor as a very rough estimate.
2002 Ford Crown Victoria 92,000 mi,
Failed wheel bearing. Gear oil leaking from axle seal. Axle shaft worn at bearing seat area because of spinning of seized bearing. Installed new bearing with extra wide inner race to bridge over the worn axle shaft. Order same bearing number but add letter R (for Repair) after number to get the repair bearing for salvage procedure.
2008 Ford Crown Victoria 188,000 mi,
rear axle failed badly with leaking oil bad bearings with too much play we replaced it but it the bearings were worn out again in only 3 weeks its a worst nightmare
right axle shaft came off while driving
right rear axle bearing seal bust, spewed rear axle oil in wheel well, fixed by replacing rear axle bearings and seals,