Diff fluid with a Detoroit locker?

[Craig]

Hey. It's time for me to change my diff fluid since my rearend rebuild. I have a Detroit locker back there now. Just wondering if I should be using a different kind of diff fluid and if the different kinds will change the way the locker engauges/disengauges?

	Locking Differential Provides even more traction than a limited-slip differential by “locking” the axle shafts together when the driver wants to do it. Locking differentials do not allow for wheel-speed differences and must not be used on dry, paved roads.

[88Wrangles]

use the same type of diff fluid as normal...but also put in an additive for the locker. Just go to an auto parts store and they have it there right next to the diff fluid.

	Locking Differential Provides even more traction than a limited-slip differential by “locking” the axle shafts together when the driver wants to do it. Locking differentials do not allow for wheel-speed differences and must not be used on dry, paved roads.

[redrooster]

Never heard that before. I have been running mine on 80W90 for years without problems. The only time I know that you need to additive is if you are running a limited slip or a Detroit Gearless. The standard Detroits work fine with 80W90.

[88Wrangles]

Originally Posted by redrooster

Never heard that before. I have been running mine on 80W90 for years without problems. The only time I know that you need to additive is if you are running a limited slip or a Detroit Gearless. The standard Detroits work fine with 80W90.

Woops, my bad. I guess I was too quick to reply and wasn't even thinking