locking rear axle?

[bottomlesspit 2]

Just replaced the front pinion seal and need to know how to check to see if my rear axle is a locking one or not. its a '92 mustang. need to know if i have to add additive friction modifier or not.

 

[Shakerhood]

If I remember right when the rear is in the air and you rotate a rear tire if the other tire turns the same direction it is a Traction Lock rear.

 

[393Bird]

Yep, both rear tires off the ground, and in neutral , rotate the wheel and if they both turn the same way, it is a Traction Lock.

 

[Car RamRod]

what they said.

 

[Realmongo]

...and if it the other wheel does not turn or turns in the opposite direction, it is a conventional differential.