Performance, Features & Benefits

• Long oil life – maintenance saving

Shell Corena S4 R is capable of providing oil maintenance intervals of 10,000 hours (where allowed by manufacturers) even when operating at maximum discharge temperatures in excess of 100°C. This may be extended up to 12,000 hours under certain conditions.

The advanced formulation of Shell Corena S4 R helps deliver exceptional oil life through:

• Exceptional resistance to thermal and chemical breakdown.
• Resist formation of deposits on rotating components in screw compressors and in sliding vane slots for continuous efficient operation.
• Exceptionally low levels of deposit formation to help maintain excellent internal surface cleanliness particularly in oil/air separator and coalescer systems.
• The exact oil maintenance interval will depend on intake air quality, duty cycle and ambient conditions. For hot and humid type climates as found in the Asian and Pacific regions, the lower oil drain period of 10,000hrs is recommended (also consult OEM recommendations).

• Outstanding wear protection

Shell Corena S4 R helps provide exceptional protection of internal metal surfaces from corrosion and wear.

It contains an advanced ashless anti-wear system to help prolong the life of critical parts such as bearings and gears.

• Maintaining system efficiency

Shell Corena S4 R is designed to provide rapid air release without excessive foaming to give trouble-free operation even under cycling conditions helping to ensure reliable start-up and continuous compressed air availability.

Shell Corena S4 R also has low volatility which can result in lower evaporation and oil carryover in the compressor, providing reduced oil top-up requirements in combination with increased air quality.

In addition, Shell Corena S4 R has excellent water separation properties to help ensure continuous efficient operation of the compressor even in the presence of water.

Main Applications

• Rotary sliding vane and screw air compressors

Shell Corena S4 R is suitable for use in oil-flooded/ oil injected single or two-stage rotary vane or screw air compressors.

• Severe service conditions

May be used where exceptionally high ambient temperatures or humidity are found.

• Bearing & Circulating oil

Perfectly suitable to cover applications where a synthetic bearing & circulating oil or R&O oil (ISO VG 32-68) is required, and will provide benefits due to increased resistance to deposits formation, improved low temperature fluidity and lowering of equipment operating temperatures.

Specifications, Approvals & Recommendations

• ISO 6743-3:2003(E) L-DAJ
• For a full listing of equipment approvals and recommendations, please consult your local Shell Technical Helpdesk.

Compatibility & Miscibility

• Miscibility

Shell Corena S4 R is fully miscible with mineral oils, although dilution with mineral lubricants will markedly reduce its performance. Care must be taken to avoid mixing Shell Corena S4 R with certain other types of synthetic fluids.

Contact your Shell representative for further information.

• Seal Compatibility

Shell Corena S4 R oils are compatible with seal materials specified for use with mineral oils