Front axle - limited slip?

[rascal]

I am going to be changing the fluid in the diffs soon and was wondering if I need to be thinking about a limited slip additive for the front in addition to the LSD in the rear.

Thanks,

[2000_f350]

Nope. No factory LSD fronts were ever installed to my knowledge.

[rascal]

Good to know.

Thank you!

[85_305]

no there werent. And if you are using the proper additive in the rear, such as synthetic royal purple, you shouldn't even be using lsd additive in the rear.

[rascal]

I can get Amsoil Severe Gear 75W-140 cheaper than I can Royal Purple right now.

Amsoil sells a limited slip / locker additive and they do say you shouldnt need it when using their synthetics. However, they do put a disclaimer that in some instances you can get chatter but you can just use their Slip Lock additive.

I am using RP 75W-90 in the front diff and RP Syncromax in the transmission & transfer case but only because I already had it lying around.

Thanks!