Pegasus Gas Engine Oil Delivers Efficiency Gains

Exxonmobil claims its Mobil SHC Pegasus gas engine oil has delivered significant benefits to customers operating natural gas engines in power generation, gas compression and green house operations. According to the company, the results achieved to date, following the launch of Mobil SHC Pegasus 12 months ago, have surpassed initial product claims with companies experiencing longer than expected oil drain intervals.

Customers throughout the US and Europe have benefited from the introduction of Mobil SHC Pegasus, in a range of engines developed by leading Original Equipment Manufacturers (OEMs) Jenbacher, Caterpillar and Waukesha. In France, Dalkia, a provider of energy services to local authorities and businesses, monitored the energy efficiency performance of Mobil SHC Pegasus in a Caterpillar G3516 engine used for power generation. Energy efficiency was measured by dividing the power generation output in kW by the fuel flow rate multiplied by fuel heating value.

The efficiency gain with Mobil SHC Pegasus over a two-month period was reported by Dalkia as in excess of 1.5 per cent, compared to standard natural gas engine oil. In addition, Enogex, a US-based natural gas transmission and midstream service company, monitored the durability and extended oil drain potential of Mobil SHC Pegasus. Dismantling one of its Caterpillar G3516 engines after running it on Mobil SHC Pegasus for more than 16,000 hours without drain, the engine component parts were found to be in excellent condition with minimal wear, 'sludging' and carbon deposits.

These results demonstrate the potential of Mobil SHC Pegasus to increase oil drain intervals by four to eight times compared to standard gas engine oils. Average fuel consumption savings of 1.5 percent were also achieved. Exxonmobil further claims that other customers in Germany, Netherlands and the US are recording positive benefits of using Mobil SHC Pegasus as well, with improved energy efficiency and extended oil drain intervals in Jenbacher J412 and Waukesha P9390GL engines. According to the company, these benefits can also help contribute to the overall sustainability of a business operating natural gas engines.

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