Gear Oil
I just did alittle preventative maintenance on my 10 bolt and I used Redline's Heavy Shockproof oil (comprable to about a 75W250). The rear is now dead quiet unlike it used to be. I only have about 100 miles on it but it seems to be working out well.
Trending Topics
As long as you use limited slip additive with it I don't see why not. For some reason alot of guys have been straying away from synthetic, not sure of the exact reason. The only reason I went with the shock proof is because it makes a nice cusion between the ring and pinion and will hopefully help save the rear when I hit it hard. 
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Clutch and cone style posi units work of of friction. The synthetic fluid changes the way the cones react with the sides of the case, and in some cases makes the not function at all. There will always be somebody who has said they have done it, but it is a bad idea.
TECH Resident
Joined: Jan 2002
Posts: 877
Likes: 55
From: Poway, Ca. where GOD and the sun always shines
Originally Posted by ace68
How come steve can you explain, is it the way the Auburn grabs the side of the unit?
I run the thicker dino 85W140 in my Zexal-Torson because it is MUCH less expensive than synthetic ($8.99 a gallon), and the heavier oil disapates (sp) the heat faster due to thicker molicules (sp). I have 3.73:1 rearend gears.
SteveC
I run Royal Purple Max Gear 75W90 with a bottle of GM limited slip additive on stock rear 
Get a girdle a stud kit it will help just dont dump the clutch to hard and it will last on the street 
Get a girdle a stud kit it will help just dont dump the clutch to hard and it will last on the street 
TECH Fanatic
Joined: Nov 2003
Posts: 1,380
Likes: 0
From: The point of no return...
Originally Posted by GM Muscle
I just did alittle preventative maintenance on my 10 bolt and I used Redline's Heavy Shockproof oil (comprable to about a 75W250). The rear is now dead quiet unlike it used to be. I only have about 100 miles on it but it seems to be working out well.
Last edited by WS-Sick; May 6, 2005 at 04:36 PM.
Techincally since the Torsen is a spider gear set-up you don't need the additive. I had some kicking around so I dumped it in anyway. I have probrably 500-600 miles on the rear and it's still quiet. I'm not sure how it will hold up in the long run but things are looking good for now.
