Mobil SHC™ Rarus 68 and Planned Engineering Service case study | Mobil™

rotary screw

In 2012, ExxonMobil proposed the next generation air compressor oil – Mobil SHC™ Rarus 68 – as a candidate trial oil in a Kaeser DS 170 rotary screw compressor for a period of two years. The purpose of the trial was to assess the performance of Mobil SHC™ Rarus 68 lubricant against the current air compressor oil in use, for productivity improvement and extended oil drain interval and see if we can deliver a success story for our many customers with this new product. Previously, the compressor was using ISO VG68 synthetic oil and the Oil Drain Interval (ODI) was 6,000 hours. The system was flushed to minimize commingling between the current oil and test oil. As part of the Mobil™ Planned Engineering Service (PES) program, the used oil samples are collected on regular intervals for Mobil Serv℠ Lubricant Analysis.

Mobil SHC™ Rarus 68 was recommended as a synthetic air compressor oil to increase productivity, improve equipment reliability and provide the potential to deliver up to three times the oil drain interval of a leading synthetic air compressor oil. Its outstanding oxidation stability, varnish and sludge control, resistance to rusting and corrosion, and excellent anti-wear properties help to extend compressor oil life, making it a success story.

Mobil Serv Lubricant Analysis results have shown that Mobil SHC™ Rarus 68 air compressor oil remained in good condition with stable viscosity (at 40°C), low oxidation level, low TAN and low metal wear after operating for two years. The ODI of 14,000 hours has been extended up to two-and-a-half times the original ODI of 6,000 hours. The company reports Mobil SHC™ Rarus 68 lubricant and the Mobil Planned Engineering Service program have improved productivity, increased equipment reliability and helped SOXAL to save US $6,766 annually, thereby, delivering a success story.


*This success story is based on the experience of a single customer. Actual results can vary depending upon the type of equipment used and its maintenance, operating conditions and environment, and any prior lubricant used.

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