Performance, Features & Benefits

• Long oil life – Maintenance saving
  Shell Corena S4 P is designed to provide safe, reliable and effective lubrication for extended service periods where mineral compressor lubricants are unsatisfactory.
  
  With an extremely low tendency for deposit build-up Shell Corena S4 P helps ensure continued high performance of the compressor over long periods and reduces maintenance costs and shutdowns.
  
  Shell Corena S4 P can extend the normal valve maintenance period from typically up to 1000 hours of operation using conventional mineral oils, to 2000 to 4000 hours depending on operating conditions.
   
• Outstanding wear protection
  Shell Corena S4 P helps provide exceptional protection of internal metal surfaces from corrosion and wear to help prolong the life of critical parts such as bearings and gears.
   
• Maintaining system efficiency
  Shell Corena S4 P helps prevent the formation of carbon deposits and lacquer on valves and piston crowns at high working temperatures and pressures.
  
  Shell Corena S4 P has excellent water separation to help prevent accelerated corrosion and facilitating easy draining of condensate.
   
• Enhanced air line safety
  In discharge air lines, the combination of rust particles, dispersed in carbonaceous deposits, coupled with heat from recently compressed air, can cause a reaction leading to the possibility of fires and explosion. Shell Corena S4 P helps to minimise the likelihood of this danger.

Main Applications

• Reciprocating air compressors
  Shell Corena S4 P is suitable for all industrial reciprocating air compressors, in particular those operating under severe conditions of air discharge temperatures in excess of 2200 C with continuous high delivery pressures.
   
• Breathing air compressors
  Shell Corena S4 P may be used in breathing air compressors, provided subsidiary clean-up apparatus is used to ensure that the air produced is fit for breathing.

Specifications, Approvals & Recommendations

• DIN 51506 VDL ISO/DP 6521-L-DAB - medium duty
• ISO 6743-3:2003 DAB - Severe duty
• EN 12021
• For a full listing of equipment approvals and recommendations, please consult your local Shell Technical Helpdesk.

Compatibility & Miscibility

• Miscibility
  Shell Corena S4 P oils are fully miscible with mineral oils, although dilution with mineral lubricants will markedly reduce its performance.
   
• Seal Compatibility
  Shell Corena S4 P, in common with other ester-based lubricants, is not compatible with all seal materials. Some older compressors may need to have the seals changed before they can be run on the new grades.
   
• Compatibility Guide : Acceptable
  High Nitrite content (SEB5) >36% acrylonitrile
   
• Compatibility Guide : Majority Acceptable
  Medium nitrile content (SE70) 30 - 36% acrylonitrile
   
• Compatibility Guide : Not recommended
  Low nitrile content <30% acrylonitrile

Health, Safety & Environment

• Health and Safety
  Shell Corena S4 P Oil is unlikely to present any significant health or safety hazard when properly used in the recommended application and good standards of personal hygiene are maintained.
  
  Avoid contact with skin. Use impervious gloves with used oil. After skin contact, wash immediately with soap and water.
  
  Guidance on Health and Safety is available on the appropriate Material Safety Data Sheet.
   
• Protect the Environment
  Take used oil to an authorised collection point. Do not discharge into drains, soil or water.