Installed the rear cover today and added some gear lube and gm posi additive. When searching the internet it seem most sites said 2 qts and one (1) 4 oz GM bottle of additive. Then when doing a little research on rebuilding the carrier, a highly regarded corvette rebuilder that has been doing it for 47 years out in PA offer a full restro rebuild and it included 8 oz of the additive and 2 quarts of the fluid. Makes one wonder.
Bobs_Place said
Nov 6, 2019
As I recall start with 4oz, if the diff chatters or snaps on corners add 2oz more up to 8oz. The stuff is a friction modifier, so add only what's needed.
I would think to much additive would cause excessive clutch slippage.
I didn't use any additive, the diff would sometimes snap on starts during cornering but never any other time.
jim larson said
Nov 7, 2019
Bobs_Place wrote:
As I recall start with 4oz, if the diff chatters or snaps on corners add 2oz more up to 8oz. The stuff is a friction modifier, so add only what's needed.
I would think to much additive would cause excessive clutch slippage.
I didn't use any additive, the diff would sometimes snap on starts during cornering but never any other time.
Good to know. When I got the red 66 SS it would do that snaping thing on corners. It had a 2 series carrier with a spacer, I changed it to a 3 series and added the additive, no more sniping.
Installed the rear cover today and added some gear lube and gm posi additive. When searching the internet it seem most sites said 2 qts and one (1) 4 oz GM bottle of additive. Then when doing a little research on rebuilding the carrier, a highly regarded corvette rebuilder that has been doing it for 47 years out in PA offer a full restro rebuild and it included 8 oz of the additive and 2 quarts of the fluid. Makes one wonder.
As I recall start with 4oz, if the diff chatters or snaps on corners add 2oz more up to 8oz. The stuff is a friction modifier, so add only what's needed.
I would think to much additive would cause excessive clutch slippage.
I didn't use any additive, the diff would sometimes snap on starts during cornering but never any other time.
Good to know. When I got the red 66 SS it would do that snaping thing on corners. It had a 2 series carrier with a spacer, I changed it to a 3 series and added the additive, no more sniping.