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A. Shell Corena S3 R 46 is for rotary sliding-vane and screw air compressors — premium long-life lubrication with improved efficiency in rotary compressor service.
A. Shell Corena S3 R 46 is ISO VG 46 — the most widely specified rotary compressor oil viscosity.
A. Shell Corena S3 R 46 meets ISO 6743-3 (compressor oil classification).
A. Shell Corena S3 R 46 is tested to ASTM D445 (kinematic viscosity); ASTM D1298 (density); ASTM D3427 (air-release); ASTM D2272 (RPVOT oxidation stability); and ASTM D1401 (water separability).
A. Both are Shell Corena S3 R premium rotary compressor oils meeting ISO 6743-3. They differ only in viscosity grade: S3 R 46 (this product) is ISO VG 46 for general rotary compressor service; S3 R 68 is ISO VG 68 for higher-duty rotary compressor service.
A. API and ACEA are the universal lubricant performance standards every reputable oil meets. They are your baseline check — match the code your handbook specifies (e.g., API CI-4 or ACEA E7 for heavy-duty diesel) and the oil is technically suitable for your machine. Every oil on our site lists its API and ACEA classifications.
A. An OEM Specification is the lubricant requirement set by a vehicle or equipment manufacturer (e.g., MB 228.3, VW 504.00). When an oil lists the code, the oil manufacturer has developed and tested it to meet the criteria the equipment manufacturer requires. Match the code in your handbook and you have a lubricant engineered for your machine.
A. An OEM Approval means the oil has been formally tested and signed off by the equipment manufacturer and listed on their official approved-products register (e.g., MB-Approval 228.3). An Approval confirms the oil is recognised by the equipment manufacturer for service use in their machines.
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