Changing '04 rear fluid
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Freshman User
Joined: May 2008
Posts: 41
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Changing '04 rear fluid
This may sound like a really stupid question buuuut is the very large plug with the very large sqaure over 1" the drain plug on the back of the rear cover? It looks enormous compared to the fill which I think is the small plug about half way up the back.
I never worked on the independent rear models and do not want to screw up!
Any external way to identify if I have an LSD or not?
I never worked on the independent rear models and do not want to screw up!
Any external way to identify if I have an LSD or not?
Hotshot
Joined: Jul 2005
Posts: 11,931
Likes: 180
your right. on a regular truck like the F150, you remove the rear cover and clean inside. on the EXP independant you have an aluminum box rear pumpkin. There is a large plug at the bottom to drain, and the normal 1/2 inch pipe plug to fill about half way up. i use the 3/8 ratchet to remove the top plug, i forget how big the bottom is, if it is 1/2 inch ratch or i think you need a 3/4 square adaptor for the ratchet. i normally park front end up a little so everything runs to the back and drains good. let it set for 20 minutes to get everything out. THEre should be a sticker on the door that tells you if you have LS or not. EIther way, put 75 w 140 FULL synthetic oil in the back, and a 7 oz tube of friction modifier that you can get at Auto Zone. It helps with the gear whine even if you dont have a LS axle.
Hotshot
Joined: Jul 2005
Posts: 11,931
Likes: 180
these are the EXP codes below. the above are for the F150-- sorry.
Axle Codes
L - Limited Slip Differential
C - Conventional Differential
Code Ratio
41 3.27C
42 4.10C
43 3.08C
45 3.55C
46 3.73C
D1 3.27L
D2 4.10L
D4 3.73L
D5 3.55L
Axle Codes
L - Limited Slip Differential
C - Conventional Differential
Code Ratio
41 3.27C
42 4.10C
43 3.08C
45 3.55C
46 3.73C
D1 3.27L
D2 4.10L
D4 3.73L
D5 3.55L
CO River Rat
Joined: Feb 2004
Posts: 3,209
Likes: 0
From: Lake Havasu City AZ
Mark -
If your '04 has the 2" receiver hitch and 7-pin round trailer receptacle, then you've got the 3.73 LS rear end.
Steve
If your '04 has the 2" receiver hitch and 7-pin round trailer receptacle, then you've got the 3.73 LS rear end.
Steve
Trending Topics
Elder User
Joined: Mar 2007
Posts: 695
Likes: 4
There is a tag on the rear diff. The first thing on the tag will either be 3 55 or 3L73. The L in the 3 73 means limited slip. the numbers are the gear ratio
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