Shell Gas Compressor Oil S4 PV 190
Shell Gas Compressor Oil S4 PV 190 is an advanced synthetic gas compressor lubricant formulated with polyalkylene glycol base oils for high-performance operation in reciprocating and labyrinth piston compressors handling hydrocarbon and other gases.
Shell Gas Compressor Oil S4 PV 190
( Previously named: Shell Madrela T )
High-performance synthetic lubricant for reciprocating gas compressors
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Designed for use in compressors handling a wide range of gases, including methane, ethylene, ammonia, and more
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Based on polyalkylene glycol (PAG) base oils with low gas solubility to minimize viscosity loss
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Provides extended service intervals by improving piston ring and packing lubrication
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Maintains a strong lubricating film to minimize corrosion and cylinder wear
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Enables lower feed rates compared to conventional mineral oils
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Reduces oil carryover, enhancing system reliability and efficiency
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Compatible with common seal materials (e.g. butyl, nitrile, Viton) — new seals recommended on changeover
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Not miscible with mineral oils or most synthetic types — special changeover procedure required
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Formerly known as: Shell Madrela T
Global Product Code: 001D8386
Application:
Shell Gas Compressor Oil S4 PV 190 is a premium synthetic gas compressor oil designed for reciprocating and labyrinth piston compressors operating with hydrocarbon and inert gases. It is especially effective where extended service intervals and reduced oil carryover are priorities. The product is based on polyalkylene glycol (PAG) fluids and is approved by major OEMs for use in enclosed pattern compressors, sump lubrication systems, and gas cargo service compressors.
Performance Features & Benefits:
- Extended Maintenance Intervals: Reduced gas solubility improves lubricant film retention, lowering wear and enabling longer service life.
- Outstanding Wear Protection: Low viscosity loss helps retain lubrication on cylinder walls, piston rings, and packing components.
- Improved System Efficiency: Lower feed rates and less oil carryover contribute to reliable performance and gas purity.
- Seal Compatibility: Suitable for use with butyl, nitrile, neoprene, and Viton seals. New seals are recommended during conversion from mineral oils.
- Special Changeover Requirements: Not compatible with mineral oils or most synthetics. Use Shell’s guidelines when converting existing systems.
Main Application Areas:
- Reciprocating gas compressors (hydrocarbon and inert gases)
- Labyrinth piston compressors (for forced-feed lubrication of plain bearings)
- Sump and lubrication systems in enclosed compressors with gas exposure
- Compressors handling gases such as methane, ethylene, butadiene, ammonia, propane, vinyl chloride monomer, etc.
Specifications & Approvals:
- Approved by Burckhardt Compression A.G. – K-type gas compressors
- Approved by Linde A.G. – general service gas compression
- Approved by GreenField A.G. (Atlas Copco) – trunk piston gas compressors
- Meets Burckhardt Lubricating Oil Specification (VSB) 1001301
Environmental & Safety Information:
- Use impervious gloves when handling used oil. Avoid prolonged skin contact.
- Do not release into drains, soil, or watercourses. Dispose of at certified collection sites.
- Safety Data Sheet (SDS) available via inquiry
Technical Specifications:
| Property | Typical Value | Method |
|---|---|---|
| Kinematic Viscosity @ 40 °C | 190 mm²/s | ISO 3104 |
| Kinematic Viscosity @ 100 °C | 35 mm²/s | ISO 3104 |
| Viscosity Index | 234 | ISO 2909 |
| Flash Point (COC) | >260 °C | ISO 2592 |
| Pour Point | -36 °C | ISO 3016 |
| Density @ 15 °C | 1055 kg/m³ | ISO 12185 |
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