This pack includes 4 cans of Red Line Heavy Shockproof gearbox oil and differential oil, each containing 0.95 L, for a total volume of 3.8 L. It is designed for transmission applications (transmissions and differentials) requiring enhanced oiling, particularly when components are subjected to heavy loads and high mechanical stress. The Heavy Shockproof formulation is designed to improve protection of contacting surfaces and help minimize wear under severe conditions. The pack format simplifies workshop management and inventory control, ensuring a consistent quantity for a complete service or for maintaining a regular stock. Vehicle compatibility, standards/viscosity, and manufacturer recommendations: Not specified.