Mobil Rarus 827

18.9 L18.9 L
Vendor: McKupler Inc. SKU: 135361
  • Mobil Rarus 800 Series

The Mobil Rarus™ 800 Series is a line of supreme performance air compressor lubricants primarily intended for the lubrication of severe duty reciprocating air compressors. They are formulated with design-specific synthetic base-oils and a high technology additive system that assures exceptional equipment protection and reliability for compressors operating under conditions where mineral-oil based products are not meeting expectations. 


Features and Benefits

The use of the Mobil Rarus 800 Series oils can result in cleaner compressors and lower deposits compared to conventional mineral oils, resulting in longer running periods between maintenance intervals.


Advantages and Potential Benefits

High Performance Synthetic Base Stocks

Significant performance capabilities relative to mineral oils
Improved safety

Low Ash and Carbon Formation

Improved valve performance
Reduced deposits in discharge lines
Reduced potential for fires and explosions in discharge systems
Improved compressor performance

Outstanding Oxidation and Thermal Stability

Longer oil life
Improved filter life
Lower maintenance costs

High Load-carrying ability

Reduced wear of rings, cylinders, bearings and gears

Excellent Water Separability

Less carryover to downstream equipment
Reduced sludge formation in crankcases and discharge lines
Reduced blockage of coalescers
Less potential for emulsion formation

Effective Rust and Corrosion Protection

Improved protection of valves and reduced wear of rings and cylinders



The Mobil Rarus 800 Series oils are recommended for single and multistage air compressors, but are not recommended for air compressors used in breathing air applications. They are particularly effective for continuous high temperature operation with discharge temperatures up to 200ºC. They are suitable for reciprocating and rotary type machines with the lower viscosity grades mainly used in rotary compressors.


The following types of compressor applications have shown excellent performance with the Mobil Rarus 800 Series oils:

  • All types of air compressors but specifically recommended for reciprocating air compressor
  • Units operating under severe conditions
  • Multistage units with a history of excessive oil degradation from mineral oil-based products
  • They can be used for cylinder and crankcase lubrication
  • Compressor systems with critical gears and bearings
  • Compressors used in stationary and mobile applications


Available in ISO Viscosity Grades:

ISO VG 32 (Rarus 824), 100 (Rarus 827), 150 (Rarus 829)


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