What are the implications of using an incorrect gear oil viscosity in a limited-slip differential?

Using an incorrect gear oil viscosity in a limited-slip differential can lead to several problems, including reduced performance, increased wear, and potential damage to the differential. Limited-slip differentials rely on friction modifiers in the gear oil to allow the clutch packs or cones to slip smoothly when needed, while still providing sufficient friction to limit wheel spin. Viscosity is a measure of a fluid's resistance to flow. If the gear oil viscosity is too low, it may not provide adequate lubrication to t....