What gear oil to use?? 8 3/4

[runningman]

Just got done (finally) cleaning up the rear end, installing new seals and the SSBC disk brake kit.  Any recommendations on which oil to use?  It is an 8 3/4 3.23 sure grip..........thanks  matt

[kamkuda]

85 W 140,  gear lube and go to your local Mopar dealer and pick up some friction modifier (Sure grip fluid)

[Plumcrazy]

I use Mopar synthetic 75w-90.

[John_Kunkel]

I use Red Line synthetic 75W-90, no need for additional additives.

[471_Magnum]

I use Red Line synthetic 75W-90, no need for additional additives.

That said, it depends somewhat on the type of SureGrip. My experience has been with the Power Lock (clutch-type).

[runningman]

A buddy of mine just had his rear end rebuilt from DTS, they said they wouldn't honor the warranty if synthetic was used...........anyone know what's up with that?

[firefighter3931]

A buddy of mine just had his rear end rebuilt from DTS, they said they wouldn't honor the warranty if synthetic was used...........anyone know what's up with that?

A clutch style suregrip can slip if the lube is too slippery. I use regular dino 85-140 with friction modifier. No problems



Ron