Shell Corena S4 R 46
Shell Corena S4 R 46 is a high-performance synthetic air compressor oil developed to provide outstanding lubrication for rotary screw and sliding vane air compressors operating under demanding conditions. Formulated using advanced synthetic base oils and a specialised additive system, the lubricant is designed to deliver long oil life, excellent protection against wear and deposits, and improved operational efficiency in industrial compressor systems.
One of the key advantages of Shell Corena S4 R 46 is its extended service life. The oil is engineered to provide maintenance intervals of up to 10,000 operating hours under normal operating conditions, and in some applications this may extend up to 12,000 hours where permitted by equipment manufacturers. The formulation provides excellent resistance to thermal and chemical breakdown, allowing the oil to maintain performance even when compressors operate at discharge temperatures exceeding 100°C. This extended oil life helps reduce maintenance costs, minimise downtime and improve equipment reliability.
Shell Corena S4 R 46 also offers outstanding protection against wear and corrosion. The oil contains an advanced ashless anti-wear additive system that helps protect critical compressor components such as bearings, gears and internal metal surfaces. By maintaining a strong lubricating film between moving components, the lubricant reduces friction and wear, helping extend the service life of key equipment parts and ensuring reliable compressor operation over long periods.
Another important benefit of Shell Corena S4 R 46 is its ability to maintain compressor efficiency. The oil is designed to release air rapidly without excessive foaming, helping prevent operational problems during start-up and cyclic operation. The lubricant also has low volatility, which helps reduce oil evaporation and oil carryover in compressed air systems. This can result in reduced oil top-up requirements and improved compressed air quality within the system.
In addition, Shell Corena S4 R 46 provides excellent water separation characteristics, allowing water to be easily removed from the oil in systems where moisture may be present. This helps maintain lubrication performance and ensures efficient compressor operation even in humid operating environments. The lubricant also helps prevent deposit formation on rotating components and within oil/air separator systems, helping maintain internal cleanliness and reliable performance.
Shell Corena S4 R 46 is suitable for oil-injected rotary screw and sliding vane compressors and can also be used in certain applications requiring synthetic bearing or circulating oils within the ISO VG 32 to 68 viscosity range. The product meets ISO 6743-3 L-DAJ classification requirements. Physical properties include a viscosity of approximately 46 mm²/s at 40°C and 7.5 mm²s at 100°C, a viscosity index of around 135, density of approximately 843 kg/m³ at 15°C, flash point of about 230°C and a pour point of approximately −48°C, supporting reliable lubrication across a wide operating temperature range.
