LUBEGARDĀ« Limited-Slip Supplement is specifically formuated for the clutches in limited slip differentials. Limited slip differentials depend on the operation of pre-loaded clutch packs on each axle shaft. Gear oils made for standard differentials do not contain the additives that make these clutches work. LUBEGARDĀ« Limited-Slip Supplement contains LXE , a unique advanced friction modifier to eliminate chatter. It also contains rust and corrosion inhibitors to protect bearing and gear.