Changing gear oil
Thread Starter
Safety Car
Joined: Jul 2010
Posts: 4,018
Likes: 388
From: Chandler AZ
Changing gear oil
This will be my first gear oil change and T56 fluid change, guess they are long overdue but better late than never.
Anyways is this the correct stuff for the differential?
Bought 2 quarts.
Last edited by 1999corvettels1; Jan 17, 2019 at 06:00 PM.
Drifting
Joined: Sep 2017
Posts: 1,968
Likes: 697
From: Avon Lake OH
Most GL-5 gear oils now contain the friction modifiers suitable for use with factory type clutch-type limited slip differentials and for most of these LSD no additional friction modifiers are required. Remember that too much as well as too little of these friction modifier additives are a bad thing. You should be fine with the Mobil 1 75w-90 fluid that you bought in a stock differential or any other high quality synthetic GL-5 fluid from say Redline, Amsoil, Royal Purple or GM.
Now if you have a differential that was setup by someone in the aftermarket like say Rick at RTK, then I would follow whatever they recommend that you to use due to their possible special setup of clutch material and/or how tight they set things up. The key for a street driven C5 is to make sure the LSD does not chatter during a fairly tight figure 8 maneuver in an open parking lot. Also if you are road racing your C5 or happen to do a lot of track day events, then a different fluid maybe needed.
Now if you have a differential that was setup by someone in the aftermarket like say Rick at RTK, then I would follow whatever they recommend that you to use due to their possible special setup of clutch material and/or how tight they set things up. The key for a street driven C5 is to make sure the LSD does not chatter during a fairly tight figure 8 maneuver in an open parking lot. Also if you are road racing your C5 or happen to do a lot of track day events, then a different fluid maybe needed.
Burning Brakes
Joined: Jan 2006
Posts: 788
Likes: 105
From: Olathe Kansas
I think you are going to need more than 2 qts.. Especially since it's very difficult to get it all out...
I also squeeze several ounces thru when drain plug is out and empty just to "flush" out some crap in there.
You will need to add the LS additive IF you get any clicking/popping noises while cornering.. You'll prob be ok.. I Usually add it /
I also squeeze several ounces thru when drain plug is out and empty just to "flush" out some crap in there.
You will need to add the LS additive IF you get any clicking/popping noises while cornering.. You'll prob be ok.. I Usually add it /
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