Castrol B373 is a 90w (SAE 90) mineral based extreme pressure gear oil which combines limited slip performance with excellent load carrying ability. It is particularly suitable for use in clutch plate type limited slip differentials fitted to Race or Rally competition vehicles.
- Ideal for competition vehicles with plate type LSDs
- Maximises LSD performance
- Provides high levels of protection even in harsh conditions
B373 is not recommended for use in road vehicles.
Specifications: API GL-6+
Supplied in 1 litre bottles