differential fluid change
Thread Starter
Racer
Joined: Nov 2006
Posts: 258
Likes: 1
From: Temple, TX
differential fluid change
Is it true that you have to take the leaf spring off to change diff. fluid? I have taken this thing to two shops and both sent me away cause they didnt want to do the job thanks!
Safety Car
Joined: Mar 2009
Posts: 3,558
Likes: 4
From: Oakland California
If you want to remove the cover to get all of the oil out you do, but if not you can just do as mentioned above. You can use a pump to suck out the old fluid and drop in the new fluid. Good luck
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Thread Starter
Racer
Joined: Nov 2006
Posts: 258
Likes: 1
From: Temple, TX
yeah I had a shop say they couldnt get their wrench in to get the plug out because of the leaf spring and exhaust I am buying a jack tomorrow! I am tired of nobody wanting to work on this car geesh
Drifting
Joined: Aug 2009
Posts: 1,635
Likes: 8
From: Enid Oklahoma
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Burning Brakes
Joined: Mar 2006
Posts: 915
Likes: 2
From: Lima, OH -- 69 L71 427/435hp
I am tired of nobody wanting to work on this car geesh
...most tow drivers don't like vette's
Le Mans Master
Joined: Oct 2005
Posts: 6,247
Likes: 471
From: Glen Allen, VA
I think it's a 13mm 12 point socket that will fit right over that square headed fill plug. Try it with a long extention on you socket wrench, it makes life a lot easier than trying to get space to turn an open end wrench. No need to remove the wheel or spare tire carrier. Then as others said, just use something to suck out all the old fluid. Make sure to use the posi additive when refilling. I believe if you're using the GM fluid as many recommend here, use 2 bottles of gear oil, and one bottle of posi additive.
Drifting
Joined: Sep 2007
Posts: 1,572
Likes: 51
From: Wichita Kansas
When changing oil on a diff that I have no idea about its past maintenanceormilage on oil, I like to waste one bottle to clean the diff out. Suck out the old oil, pump in one bottle of new; spin the rear by hand a while then suck that oil out. Now refill with fresh oil and additive.
