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Rear differential capacity

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Old 08-20-2009, 04:23 PM
bryanj bryanj is offline
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Rear differential capacity

So I bought the early 99 F350 7.3l dually I was asking questions about a couple of weeks ago. I get the shutter in the rear differential on slow turns, so I'm off to change the fluid. I didn't get any owners manuals with the truck, so I have no idea what the capacity is. The VIN sticker says the axle is an "F2". I'm a bit torn about which route to take; should I do the standard gear oil then add the friction modifiers or should I just go the royal purple route? What are some other options? I don't want to spend a fortune on gear oil just to find out that I need to replace the clutch packs. The truck has 22K miles on it, but didn't move much in the last 5-6 years, so I suspect the clutch packs are fine.

Any thoughts and what is the capacity? Thanks for the help....

Bryan
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Old 08-20-2009, 05:15 PM
cbradford cbradford is offline
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F2 — 4.10 limited slip, F-350 (dual rear wheels) and I'm thinking 2qt's of Ford synthetic 75w140 weight gear lube and 1- 4oz bottle friction modifier, or 2qt's + Royal Purple for limited slip, but you may want to call your local Ford Dealer for the recommended quantity. I used the Ford Lube myself but it's a personal choice.
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Old 08-20-2009, 07:46 PM
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A dana 80 takes alot more then 2 quarts. I just done one last weekend, took just over 4 quarts plus the additive.
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Old 10-04-2010, 10:30 AM
hitekhomeless hitekhomeless is offline
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I also have axle code: F2 — 4.10 limited slip, F-350 on my 2001 4x4 Dually. Is 75w140 the correct weight? Will it take just over 4 quarts? What about the front end? How do I find out?

Thanks in advance!
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Old 10-05-2010, 10:20 PM
hitekhomeless hitekhomeless is offline
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Talking

Sorry for the necro posting, but hey, at least I used search
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2003, 99f350, capacities, capacity, diff, differential, dually, duty, end, f250, fluid, ford, model, rear, super

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