Join Date: Jan 2006
Location: Northern California
Thanked 2,593 Times in 2,091 Posts
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If a torsion differential requires friction modifier to work properly then I'd be questioning the lubricity of the fluid being used. There is no reason to need anything else since friction modifier is designed to change the properties of carbon based clutches found in clutch type LS carrier, but hey whatever works.
Maybe I'll try rubbing some friction modifier on the sore joints since it seems to cure all...
'01 2500 Sport 4x4 5spd w/Fastcoolers, Mag-Hytec, EZ, RV275's, 4" w/o muffler, South Bend, Steering brace, aFe, 2 lo kit, Isspro Boost, FP, and EGT on pillar, Westach Trans/Diff temp gauge in dash pod, Raptor 100 w/ 1/2" line, Pac Brake, Rancho 9000, 285's