Rear differential question - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 9 Old 06-03-2013, 02:53 PM Thread Starter
Compression Ignition Addict
 
Ford Cowboy's Avatar
 
Join Date: Sep 2010
Location: Texas
Posts: 427
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Thanks: 5
Thanked 11 Times in 11 Posts
Feedback Score: 0 reviews
Rear differential question

Gonna change front and rear diff fluids this weekend. Got the build sheet for my truck (2000 f350 7.3) this afternoon and it states that I have a 3.73 non-limited slip rear end. Now, when I pop the cover off is there a way to tell just by looking wether or not it is indeed a non limited slip? I was really hopin it was a LSD. My manual says to use 75w-140 for rear and 75w-90 for front. I found some royal purple gear oil with friction reducer already mixed in. What do y'all think of royal purple? Thanks for any help

cummin is the mess left behind by strokin!!

2000 7.3l f350 4x4 cclb psd. 4r100 trans.Ranchhand everything! 6637 intake, zoodad mod, custom big rig runnin lights, ccv mod, RR boots and plenum inserts, foil delete, EV2 gauges, edge cts, tuff country 2.5" leveling kit, X codes, 315/75r16 coopers, 08 mirrors, 6.0 trans cooler, tgc dual steering stabilizer, fabtech adj. trac bar, mbrp 5" turbo back straight pipe with 8" tip, php 6pos, ssbc brakes, ebpv delete, cat elc 100,xxx
Ford Cowboy is offline  
post #2 of 9 Old 06-03-2013, 03:02 PM
Compression Ignition Addict
 
Join Date: Jul 2011
Location: Middle TN
Posts: 1,017
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Thanks: 5
Thanked 13 Times in 12 Posts
Feedback Score: 3 reviews
yes, you can tell a difference by looking at them but i am not good enough at typing to tell you the difference. take a pic and post it up and somebody on here should be able to tell you. check your rear cover as they are bad about rusting through and leaking. i sanded and painted mine, alot of people go to the 08+ style. i feel that royal purple is overpriced and overrated but that is my opinion. i would suggest schaeffers or amsoil.

2000 F250 XcabSB, 4x4, 4" strait pipe, DIY intake, FRx, BDP tunes, WW2, 6.0 cooler, BTS VB, gauges, 55w digital projector HIDs
gomer pyle is offline  
post #3 of 9 Old 06-03-2013, 04:14 PM Thread Starter
Compression Ignition Addict
 
Ford Cowboy's Avatar
 
Join Date: Sep 2010
Location: Texas
Posts: 427
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Thanks: 5
Thanked 11 Times in 11 Posts
Feedback Score: 0 reviews
I'll try to post some pics. If anybody has any pics of the different differentials and can post em that would be sweet. I got to thinkin I know the manual says to use 75w-90 in the front, but why couldn't you use 75w-140??

cummin is the mess left behind by strokin!!

2000 7.3l f350 4x4 cclb psd. 4r100 trans.Ranchhand everything! 6637 intake, zoodad mod, custom big rig runnin lights, ccv mod, RR boots and plenum inserts, foil delete, EV2 gauges, edge cts, tuff country 2.5" leveling kit, X codes, 315/75r16 coopers, 08 mirrors, 6.0 trans cooler, tgc dual steering stabilizer, fabtech adj. trac bar, mbrp 5" turbo back straight pipe with 8" tip, php 6pos, ssbc brakes, ebpv delete, cat elc 100,xxx
Ford Cowboy is offline  
post #4 of 9 Old 06-03-2013, 04:29 PM
,,,,,,,,,,,,,,,,,,,,,,,,,
 
ZMANN's Avatar
 
Join Date: Feb 2008
Posts: 14,628
Mentioned: 53 Post(s)
Tagged: 0 Thread(s)
Quoted: 562 Post(s)
Thanks: 540
Thanked 702 Times in 669 Posts
Feedback Score: 0 reviews
this may help
you can spy the clutches on the pass side

http://www.fourdoorbronco.com/board/...c-lock-rebuild

.
.
.
Please donate to DTR Ron's Memorial
https://www.gofundme.com/2464axqr
We Miss you Ronnie
RIP
ZMANN is offline  
post #5 of 9 Old 06-03-2013, 05:16 PM
Powerstroke.org Rookie
 
Join Date: Apr 2013
Location: The mitten
Posts: 19
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Rp is junk from my experience. I either use amsoil or lucas for my diffs. Especially in the race car we use lucas diff fluid.

99.5 F350 DRW CC 4x2 53k on the clock 7.3 6637 intake mod. Hand made 4" exhaust. 4.10 gear.

92 Mustang lx 362ci N/A 830hp. Ultra street & X275 car
calypso50kid is offline  
post #6 of 9 Old 06-03-2013, 05:32 PM
Compression Ignition Addict
 
juniorssrollin's Avatar
 
Join Date: Jan 2012
Posts: 1,023
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 15
Thanked 26 Times in 26 Posts
Feedback Score: 0 reviews
Amsoil in both my diffs and transfer case..

Sent from AutoGuide.com App

2005 F350 CCLB FX4
juniorssrollin is offline  
post #7 of 9 Old 06-03-2013, 06:09 PM Thread Starter
Compression Ignition Addict
 
Ford Cowboy's Avatar
 
Join Date: Sep 2010
Location: Texas
Posts: 427
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Thanks: 5
Thanked 11 Times in 11 Posts
Feedback Score: 0 reviews
Cool I'll look into amsoil. I pulled some numbers off of the tag that hangs off the back of the differential. Maybe someone can decode it.

S-406 F
73 10 5 9M10
I just have a really hard time believing that there is no ls. The old rancher I bought it from (died last summer) had this truck custom built with all the options available for the year 2000. He was real particular in what he wanted and it just doesn't make sense that he would not have optted for a lsd. I'm gonna rip it apart this weekend and try to post some pics. FYI I looked for an axle code on the driver side door post and the axle code slot is blank. I was scratchin my head on that one

cummin is the mess left behind by strokin!!

2000 7.3l f350 4x4 cclb psd. 4r100 trans.Ranchhand everything! 6637 intake, zoodad mod, custom big rig runnin lights, ccv mod, RR boots and plenum inserts, foil delete, EV2 gauges, edge cts, tuff country 2.5" leveling kit, X codes, 315/75r16 coopers, 08 mirrors, 6.0 trans cooler, tgc dual steering stabilizer, fabtech adj. trac bar, mbrp 5" turbo back straight pipe with 8" tip, php 6pos, ssbc brakes, ebpv delete, cat elc 100,xxx
Ford Cowboy is offline  
post #8 of 9 Old 06-19-2013, 08:09 AM
Compression Ignition Addict
 
jacobm24's Avatar
 
Join Date: Apr 2011
Location: College Station
Posts: 219
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I used rp when I did my diff fluid with the fr mixed in. About a month later I ended up buying a bottle of fr from the dealership and putting it in there until it felt right on turns.

2000 f250 7.3 w/ 103k miles
4" MBRP turbo back exhaust
DIY Intake with AFE big boost filter
Autometer Cobalt gauges (trans, boost,pyro)
PHP Phoenix stock, 40ht,80dd,120race
Wicked Wheel
Harpoon Mod
203* thermostat
Dieselsite coolant filter
Dieselsite IC Boots

Fightin' Texas Aggie Class of 2013!
Petroleum Engineering
jacobm24 is offline  
post #9 of 9 Old 12-19-2013, 07:38 AM
Powerstroke.org Rookie
 
Join Date: Apr 2010
Posts: 14
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
S406F is an open differential
Fr. Frank is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome