Rear Diff fluid? - Ford Powerstroke Diesel Forum

 
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post #1 of 7 Old 07-25-2011, 10:47 AM Thread Starter
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Question Rear Diff fluid?

Last week I purchased a 2008 F250 KR.

1. How do I know if it is a limited slip?
2. What diff fluid is preferred?

On another note, the steering wheel has about 3-4" of play in it. It's lifted 6" with 35's. Would a new gear box solve this or could it be something else?

Thanks!
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post #2 of 7 Old 07-25-2011, 11:57 AM Thread Starter
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Ok. So I did some searching and determined it is a 3.73 LS. So with that being said, What fluid do I use and is it possible for the LS to go bad because I spun a single tire the other day pulling out of my neighborhood?



2008 F-250 KR
7" ICON
7" PMF blocks
Bilstein 5160F/5100R
22x14 Fuel Octane
37" Toyo M/T
H&S Mini Maxx w/ Gearhead tuning!
5" Diamond Eye
4" Diamond Eye DP
ARP head studs
Custom Stock Intake

RCD converter, HD billet input, low/rev hub, suncoast clutches.
160k miles and counting...
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post #3 of 7 Old 07-25-2011, 03:46 PM
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Seems possible to me. A limited slip is just that, it limits the slip.

I believe some fluids have the LS treatment in them already, I've used Royal Purple before.

2008 F-250 SC SRW 4X4
H&S Mini Maxx - DPF Delete - S&B - Dieselsite Coolant Filter
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post #4 of 7 Old 07-25-2011, 04:21 PM
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the play in your wheel, I would check the pitman arm to make sure its tight.

Trucks,Guns,Harleys
2013 FX4 Lariat Supercab 8ft box/Westin-HDX grill guard/H&S minimax/DPF/cat/delete/afe4 inch exh/Rancho 4 inch lift/1250x35x20s
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post #5 of 7 Old 07-25-2011, 08:14 PM Thread Starter
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Hey, thanks guys. I will be doing that fluid change asap. Also I checked the pitman arm for play with the aid of a friend and it is indeed loose. So now I suppose I will either tighten it assuming its not or put a washer or spacer to make it tight.



2008 F-250 KR
7" ICON
7" PMF blocks
Bilstein 5160F/5100R
22x14 Fuel Octane
37" Toyo M/T
H&S Mini Maxx w/ Gearhead tuning!
5" Diamond Eye
4" Diamond Eye DP
ARP head studs
Custom Stock Intake

RCD converter, HD billet input, low/rev hub, suncoast clutches.
160k miles and counting...
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post #6 of 7 Old 07-26-2011, 02:52 PM
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Quote:
Originally Posted by strokin07 View Post
Hey, thanks guys. I will be doing that fluid change asap. Also I checked the pitman arm for play with the aid of a friend and it is indeed loose. So now I suppose I will either tighten it assuming its not or put a washer or spacer to make it tight.
that pitman arm torques to 350 ftlb

Trucks,Guns,Harleys
2013 FX4 Lariat Supercab 8ft box/Westin-HDX grill guard/H&S minimax/DPF/cat/delete/afe4 inch exh/Rancho 4 inch lift/1250x35x20s
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post #7 of 7 Old 07-26-2011, 03:26 PM Thread Starter
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OK thanks. I suppose I will need to take it somewhere.



2008 F-250 KR
7" ICON
7" PMF blocks
Bilstein 5160F/5100R
22x14 Fuel Octane
37" Toyo M/T
H&S Mini Maxx w/ Gearhead tuning!
5" Diamond Eye
4" Diamond Eye DP
ARP head studs
Custom Stock Intake

RCD converter, HD billet input, low/rev hub, suncoast clutches.
160k miles and counting...
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