Differential leaking-replace or rebuild? - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 12-21-2013, 03:08 PM Thread Starter
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Differential leaking-replace or rebuild?

Hey Guys,
Got a 2003 4x4 excursion with a 7.3L engine. Truck has 232k miles. I just noticed that the rear differential is leaking where the driveshaft enters the the diff. Slinging fluid all over the undercarriage. Differential is starting to grind some too.
So here's my question. Should I take the diff out and have it rebuilt or should I order a replacement? Which is more cost effective? If I need to order one, who should I order from? This is the family vehicle so I am not looking for anything spiffy. Thanks for the input.
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post #2 of 3 Old 12-22-2013, 09:14 AM
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at least fill it back up if your going to drive it.
fill plugs on the front, drivers side of the pumpkin.

diff rebuilds can be pricey depending on what needs to be rebuilt.
a 4 wheel drive shop is going to be the cheapest because they do these things for a living.

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post #3 of 3 Old 12-22-2013, 02:34 PM Thread Starter
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Thanks for the info. I have been keeping it topped off with Lucas Synthetic Stabilizer. Seems ok for now but it's slinging out 1 quart of oil every 3000 miles. Is there a way I can replace the seal around the driveshaft to keep the oil from coming out so fast?
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