rear end service
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
No need for a full write up. It's very simple. You just pull the diff cover (10 bolts), let the fluid drain out, remove any old gasket material, put the cover back on with a new gasket, pull the fill plug on the right side top of the diff, fill with fluid (80W90 dino for '98 or 75W90 synthetic for '99+) and 4 ounces of GM limited slip additive till it pours out the fill plug (about 1.75 quarts).
The end.
The end.
Joined: Nov 2001
Posts: 34,629
Likes: 2,549
From: Schiller Park, ILL Member: #317
Originally Posted by _JB_
I thought stock 10 bolts didn't have a fill hole?
They all have the fill plug on the forward side of the axle near the upper passenger side of the diff.It's a drain plug they don't have stock. The aftermarket covers usually do have that though.
You could also rig up a way to suck and fill the differential fluid from the fill hole. Sounds hard but very possible. There are "Flush" machines at local shops that essentially do just that if you absolutly don't want to pull the differential cover.
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Originally Posted by autotrix
You could also rig up a way to suck and fill the differential fluid from the fill hole. Sounds hard but very possible. There are "Flush" machines at local shops that essentially do just that if you absolutly don't want to pull the differential cover.
To add to RPM WS6: Don't forget to wipe all metal off of the magnet on the diff cover (if the stock 10-bolt has one, I forget
) and wipe out the inside of the housing with a rag as well. Get as much of the old junk out of there as you can. LS1 Tech Stories
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Originally Posted by RPM WS6
No need for a full write up. It's very simple. You just pull the diff cover (10 bolts), let the fluid drain out, remove any old gasket material, put the cover back on with a new gasket, pull the fill plug on the right side top of the diff, fill with fluid (80W90 dino for '98 or 75W90 synthetic for '99+) and 4 ounces of GM limited slip additive till it pours out the fill plug (about 1.75 quarts).
The end.
The end.
Launching!
Joined: Nov 2006
Posts: 232
Likes: 0
From: Seven Nation Army
dino in 98 due to the fact its standard with the auburn which uses clutch packs...99+ have the torsen standard......... and also screw the suck machines.... with the cover off you get a change to for wear on the ring and pinion and give a good overall look..also you can check the magnetic for any unusually amount of metal particals..... u cant do this with a sucky machine
Originally Posted by 98ws61le
and also screw the suck machines.... with the cover off you get a change to for wear on the ring and pinion and give a good overall look..also you can check the magnetic for any unusually amount of metal particals..... u cant do this with a sucky machine
Agreed. 