Detroit Locker Additive?
#1
Teching In
Thread Starter
Join Date: Feb 2009
Location: Houston TX
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
My 9" rear will be here tomorrow and i am wondering what rear diff. fluid to put in it and if it needs and additive for the Detroit Locker?
- thanks
- thanks
#3
TECH Enthusiast
iTrader: (30)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I'm switching to synthetic Amsoil 75W-140 in mine. I've been using Valvoline synthetic for 5k. No problems and gears are quiet. Moving up to the heavier stuff to see if it quiets the locker a bit. At any rate, the locker has no clutches so no friction additive needed.
#5
Internet Mechanic
iTrader: (17)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Some people try to do that to quiet it down or have some extra lube to quiet the engagement. With a tru trac it may mess it up. The shop that did my gears added GM lube to it and I gotta flush the rear at some point and run enough oil for 2 changes to flush it all out.
#6
Teching In
Thread Starter
Join Date: Feb 2009
Location: Houston TX
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
So do most use synthetic or regular with a detroit locker?
- Just got of the phone with Eaton and they said using an additive is a waste of money. They said use generic 80/90.
thx johnny
- Just got of the phone with Eaton and they said using an additive is a waste of money. They said use generic 80/90.
thx johnny
Last edited by strokednblown; 04-28-2009 at 11:06 AM.