Limited-slip or Positraction units use plates or clutches to provide the proper amount of lock-up to the differential. Slippery lubricants are required to prevent chatter, but too much slipperiness causes excess wheel spin, reducing traction.
Red Line Oil 50104 Fully Synthetic 75W85 GL-5 Differential Gear Oil - 5 Quarts
Red Line Full Synthetic GL5 75W-85 Gear Differential Oil 5 Gallon
Red Line Oil 50105 75W85 GL-5 Differential Gear Oil 1-Gallon
[Case of 12] Red Line Full Synthetic GL5 75W-85 Gear Differential Oil 1 Quart
[Case of 12] Red Line Lightweight Shockproof Gear Differential Oil 1 Quart