Rear Axle ????
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Elder User
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From: Connecticut
Rear Axle ????
Ok guys,
Im looking to figure out what rear axle i have.I know i have the 4.10 LS axle,but is it a sterling,dana60,etc,etc.
I know i need the limited slip additive.
80-90,75-140,85-140??????
I think it needs to be synthetic,right?
I need to change out all my Axle seals,so i figured might as well change the fluid too.
Any help would be great.
Thanks.
Im looking to figure out what rear axle i have.I know i have the 4.10 LS axle,but is it a sterling,dana60,etc,etc.
I know i need the limited slip additive.
80-90,75-140,85-140??????
I think it needs to be synthetic,right?
I need to change out all my Axle seals,so i figured might as well change the fluid too.
Any help would be great.
Thanks.
Last edited by Green_Dually; Aug 27, 2006 at 10:45 AM.
Logistics Pro
Joined: Jun 2005
Posts: 4,243
Likes: 16
From: AZ
It used to be SAE 75W-140 High Performance Rear Axle Lubricant F1TZ-19580-B but I think Ford has a service bulletin (TSB) for 75-90W full synthetic. The additive is Friction Modifier C8AZ-19B546-A.
On edit: I found the Motorcraft recommendation...here is the link:
http://www.fcsdchemicalsandlubricants.com/supplier/quickref/axlelube.pdf
On edit: I found the Motorcraft recommendation...here is the link:
http://www.fcsdchemicalsandlubricants.com/supplier/quickref/axlelube.pdf
Last edited by nlemerise; Aug 27, 2006 at 12:44 PM.
Elder User
Joined: May 2005
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From: Refugio, Texas
Originally Posted by nlemerise
It used to be SAE 75W-140 High Performance Rear Axle Lubricant F1TZ-19580-B but I think Ford has a service bulletin (TSB) for 75-90W full synthetic. The additive is Friction Modifier C8AZ-19B546-A.
On edit: I found the TSB...here is the link:
http://www.fcsdchemicalsandlubricant...f/axlelube.pdf
On edit: I found the TSB...here is the link:
http://www.fcsdchemicalsandlubricant...f/axlelube.pdf
YES....... SAE 75w-140 Synthetic. Should be a metal tag attached to one of the differention cover bolts.
Fleet Mechanic
Joined: Feb 2005
Posts: 1,797
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From: Northern Colorado
Originally Posted by strokin_it7.3
for the dually rear, it is a Dana 80, with 75w-140 fluid in it. about 5 quarts if i remember right. SRW trucks have a Sterling 10.25, not 10.5
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Postmaster
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In my truck im using a ford 10.25 ring and pinion. I guess the 10.5 and 10.25 have closely related parts.
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Mountain Pass
Joined: Oct 2005
Posts: 100
Likes: 10
Originally Posted by John311t
IIRC if its DRW its a Dana 80. If it SRW is a Sterling 10.5. For the weight of fluid i would go with ford owners manuel.
Postmaster
Joined: Aug 2004
Posts: 3,948
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From: SHELTON, WA
new truck has a 10.5 but yes a 10.25 r&p work. i think the only difference is the bearings the carrier rides in. thus obs/nbs can all use the same r&p.
i used royal purple synthetic. already had the friction modifier in it. (although i have an open diff
)
have a good day
i used royal purple synthetic. already had the friction modifier in it. (although i have an open diff
)have a good day
Last edited by 1997F-350; Aug 28, 2006 at 04:12 PM.
Thread Starter
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Elder User
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From: Connecticut
Originally Posted by 4X4 IN REFUGIO
YES....... SAE 75w-140 Synthetic. Should be a metal tag attached to one of the differention cover bolts.
I bought the 75-90 mobil 1 synthetic for the rear.And the additive.When i checked it before,the fliud was thin.So ill but the same back in.
Mountain Pass
Joined: Oct 2005
Posts: 100
Likes: 10
Originally Posted by John311t
SRW=Single Rear Wheel
DRW=Dual Rear Wheels
DRW=Dual Rear Wheels
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Elder User
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From: Connecticut
Originally Posted by novalovr66
Right, I know what SRW and DRW means I was talking about the difference between either trucks rear axles. Gearing? Is it possible to put 3.73 gears in a DRW? How is the gas mileage effeted between those two gearing ratios?
No,as my buddys truck has 3.73.I have the same truck but with 4.10.
Im not sure why they use the dana 80 in DRW.And not the sterling or 10.5,etc,etc.
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