Mobil SHC™ Rarus Series

Limit costly downtime by choosing Mobil SHC™ Rarus Series – synthetic air compressor oils that can meet the demands of today’s severe service conditions.

Our Mobil SHC™ Rarus Series synthetic air compressor oils protect vane and rotary screw air compressors. They are designed for severe service – such as high final compression temperatures or extended oil drain intervals – where other synthetic oils do not meet service life expectations.

Mobil SHC Rarus Series synthetic air compressor oils are formulated to deliver up to three times longer oil drain intervals than other synthetic air compressor lubricants. In fact, Mobil SHC Rarus oils have even demonstrated the ability to perform for up to 24,000 hours in field tests. These oils can also:

  • Minimize need for maintenance and downtime
  • Enhance safety through exceptional durability
  • Support sustainability efforts with extended oil drain intervals
  • Boost productivity while protecting your equipment

  • maintenance savings

    Minimizes costs and delays of air compressor maintenance

  • oil drop

    Up to 24,000 hours of lubricant life, backed by a three-year warranty*

  • runtime

    Long equipment life due to wear, rust and corrosion protection

  • Thermal conductivity

    Outstanding protection, even under extreme service conditions

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Product series information

   Air compressors productivity pointer 555.39 KB/pdf
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   Mobil SHC™ Rarus Series performance profile 1.375 MB/pdf
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Mobil SHC™ Rarus Series offers 3 lubricant grades

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Technical resources

Ensuring clean delivery of hydraulic fluids

Learn where filtration is recommended to ensure that hydraulic fluids are delivered into equipment at the correct cleanliness level.

Expert answers, Article

Air Compressor Oil Case Study

See how Mobil products and services helped extend oil drain intervals, improve productivity and increase equipment reliability for air compressors.

Success stories, PDF

Mobil Rarus SHC™ 1024 air compressor lubricant success story

See how one customer reduced energy consumption by 3 per cent by switching to Mobil Rarus SHC™ 1024 air compressor lubricant.

Success stories, PDF

Air compressor maintenance

Cut the cost of compressing air in your plant by taking basic steps toward making your system more efficient.

Technical topics, PDF

All Mobil SHC™ Rarus Series resources

Supreme Performance Air Compressor Lubricant

Features and Benefits

  • Outstanding thermal / oxidation stability help to provide up to three times oil drain interval versus a leading synthetic compressor oil and reduce maintenance downtime
  • Excellent varnish and sludge control helps to deliver cleanliness and extended compressor oil life
  • High performance synthetic base stocks with high viscosity index enables wide temperature range capability and effective lubrication at high temperatures
  • High load carrying capability protects equipment and extends life, helps minimize unexpected downtime and extend service periods
  • Exceptional resistance to rusting and corrosion, very good antiwear, demulsibility, foam control and air release and multi-metal compatibility
  • Excellent water separability helps reduce carryover to downstream equipment, reduce sludge formation in crankcases and discharge lines, helps reduce blockage of coalescers, coolers and less potential for emulsion formation



  • Mobil SHC Rarus Series are primarily for rotary screw and vane air compressor, very effective in screw type compressors with oil injection cooling; compressors with a history of excess oil degradation, poor valve performance or deposit formation
  • Compressors operating under severe conditions, particularly effective for continuous high temperature operation with discharge temperatures up to 200ºC
  • Compressor systems with critical gears and bearings
  • Not for air compressors used in breathing air applications
  • Compatible with all metals used in compressor construction and with conventional mineral oil-based air compressor oils but mixture with other oils may detract from the total performance capability


Typical Properties

Mobil SHC Rarus Series 32 46 68
ISO Viscosity Grade 32 46 68
Viscosity, ASTM D 445      
cSt @ 40ºC 30.6 44.1 65.3
cSt @ 100ºC 5.6 7.1 9.7
Viscosity Index, ASTM D 2270 , min 123 122 129
Color Orange liquid Orange liquid Orange liquid
Copper Strip Corrosion, ASTM D130,24 h @ 100ºC 1B 1B 1B
Rust Characteristics Proc B, ASTM D 665 Pass Pass Pass
Pour Point, ASTM D 97, ºC, max -42 -42 -39
Flash Point, ºC, ASTM D 93 204 197 192
Specific Gravity 15ºC/15ºC, ASTM D 1298 0.8779 0.8676 0.865


Health and Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS's are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.