Holy crap. This is one good reason to crawl under the car and make sure everything is tight and in good working condition. You're lucky you made it to a stop safely, plus the diff should be pretty easy to grab from a junkyard if you keep your eyes open.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth