rear end oil
Team Owner
Joined: Jul 2004
Posts: 30,045
Likes: 4
From: Danville Virginia
Not hard at all. Park on level ground. the drain for the rear is located on the bottom of the diff. I used a Hex socket (10mm) if I remember correctly on my ratchet to remove the drain plug. Have your pan to collect rear end oil in place. The fill plug is located on the rear of the diff. After draining reinstall drain plug. I picked up a small pump that I could place in the bottle for refill. You will need one small bottle of GM friction modifier unless you use a rear oil that already has it included. The rear will take 1.79 qts. I use Valvoline 80w-90 in my 3:42 because that is what ECS installed when I had the rear swapped. Fill until some oil comes out the fill hole, wipe off excess and reinstall fill plug. 
Chuck
Chuck
Last edited by csexton; Sep 14, 2009 at 05:56 PM.
Drifting
Joined: Feb 2009
Posts: 1,379
Likes: 1
From: MA
The rear differential oil is the easist fluid change of all.
Like above, undo the fill bolt, undo the drain, replace the drain, fill, replace fill bolt and done.
I did mine by just crawling underneath as I'm a slim-dude. Next time I'll drive on my homemade ramps to get an extra 4".
Here is the thread I had going when I did mine, good pics and diagrams in here as well as many helped with the information.
http://forums.corvetteforum.com/c5-g...he-ground.html
Let us know how you make out.
Like above, undo the fill bolt, undo the drain, replace the drain, fill, replace fill bolt and done.
I did mine by just crawling underneath as I'm a slim-dude. Next time I'll drive on my homemade ramps to get an extra 4".
Here is the thread I had going when I did mine, good pics and diagrams in here as well as many helped with the information.
http://forums.corvetteforum.com/c5-g...he-ground.html
Let us know how you make out.
Last edited by BenC5; Sep 14, 2009 at 04:44 PM.
Race Director
Joined: Feb 2008
Posts: 17,336
Likes: 8
From: Maker of Sharp Objects, AL - Roll Tide
St. Jude Donor '10-'11-'12-'13-'14-'15-'16-'17
St. Jude Knife Maker
Royal purple makes a good rear end oil but I can't think of ther name of it right off. You will also need a pump to pump it in unless you can figure some way to get the bottle to crunch up into all the stuff that's in the way 
Seriously, it's hard to turn the bottle up because of it hitting stuff. You can get a cheap pump from the auto parts store to take care of this.
after you put your oil in be sure you go to an emty parking lot or something and do some fugure eights for a few minutes to distribute the oil into the rearend well.
Seriously, it's hard to turn the bottle up because of it hitting stuff. You can get a cheap pump from the auto parts store to take care of this.
after you put your oil in be sure you go to an emty parking lot or something and do some fugure eights for a few minutes to distribute the oil into the rearend well.
