Differential question - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 9 (permalink) Old 05-02-2007, 01:25 AM Thread Starter
 
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Question Differential question

I have a 2002 F-350 ext. cab long bed single wheel, can anyone tell me how to figure out whether I have the 10.5inch or the dana diff? And if running 85w140 SAE gear oil will hurt any?

Thanks,
Chris
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post #2 of 9 (permalink) Old 05-02-2007, 01:39 AM
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you have the 10.5... the Dana comes in duallys and sythetic 75W140 is what they call for.

Aaron - 2004 F350 "Offroad Edition"

2003 F250 "Pulling Truck"
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post #3 of 9 (permalink) Old 05-02-2007, 01:47 AM
 
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HH, you have all that crap and don't even have gauges ? : laugh
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post #4 of 9 (permalink) Old 05-02-2007, 01:50 AM
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Quote:
Originally Posted by LocoMotion
HH, you have all that crap and don't even have gauges ? : laugh
NOPE but I have the outlook monitoring everything that is important..laugh

Aaron - 2004 F350 "Offroad Edition"

2003 F250 "Pulling Truck"
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post #5 of 9 (permalink) Old 05-02-2007, 01:52 AM Thread Starter
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Just wondering about the 85w140 cause I have ready access to it, and how warm should the rear axle get to the touch under normal driving conditions?
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post #6 of 9 (permalink) Old 05-02-2007, 02:47 AM
 
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Quote:
Originally Posted by hhrecovery
NOPE but I have the outlook monitoring everything that is important..laugh

haha must have missed that. :secret: :bolt laugh :deal: :ban :umno:
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post #7 of 9 (permalink) Old 05-02-2007, 06:12 AM
 
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Yes, 140wt is fine. The factory fill on the Sterling 10.25/10.5 is synthetic 75w140. I wouldn't run anything but 140wt in a diff. Thicker is better when dealing with gears. With a good load I've seen around 200-230*F after pulling a decent hill. I usually see 180*F-200*F with a good load at Freeway speeds. Unloaded you probably won't see more than 100*F unless you are cruising at high speeds for a long time. The temps will also change slightly depending on the ambient temperatures.
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post #8 of 9 (permalink) Old 05-02-2007, 01:31 PM Thread Starter
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Is there any way that you know of to install a temp gauge on the rear diff?
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post #9 of 9 (permalink) Old 05-02-2007, 02:21 PM
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Quote:
Originally Posted by strokin350
Is there any way that you know of to install a temp gauge on the rear diff?
Yes I know auto meter makes a Rear Diff Gauge, as I have it, and some of the after market rear diff covers come with a plug for the sensor to plug into.

AJ

2000 F-250 PSD Extended Cab Short Bed
-AutoMeter Gauges;Pyro, Tranny, Boost, Rear Diff, Fuel Pres, Air Pres.
-MBRP Turbo back, muffler delete
-AFE Stage II
-ITP Oil HPX Line
-CCV Mod
-AIH Delete

Trail rig: 1990 Jeep Cherokee, 4.0 I6, NP231 w/ SYE, Clayton Off road Long arm Suspension with coil conversion in rear, Full width Dana 44 up front(ARB, Warn Hubs and US Alloys Chromoly Axle shafts), full width Dana 60 in rear with Spool. 4.88 Gears all around, 36 inch Interco Bias Irok's, and lots of trail damage. :
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