Original Date: 03/08/1999
Revision Date: 01/18/2007
Best Practice : Alternative Lubricants and Environmental Implications
At the request of the Navy, the Applied Research Laboratory at the Pennsylvania State University (ARL Penn State) performed a study on the use of alternate lubricants for MS 2190 TEP. This mineral oil is the most widely used lubricant within the Navy (12,000 gallons per vessel) and has the highest disposal volume at 2,700 gallons per base. In addition, 93% of DDG-52’s specified lubricant is MS 2190, and 89% of this is used within drivetrain equipment and components.
The ARL Penn State, in conjunction with Mobil Oil, tested mixtures of 70/30 blend synthetic polyalphaolefins (PAOs) (PAO 10 and PAO 18), both commercial-off-the-shelf (COTS) Mobil synthetic oils. The new formulation, SHC 2190, is completely compatible with the mineral oil-based 2190 for ease and efficiency of substitution. The study also showed that SHC 2190 had superior performance and biodegradability compared to MS 2190, and its use resulted in reduced maintenance, less lubricant changeouts, lower failure rates, and fewer repairs. Although life- cycle costs are increased, SHC 2190 provides longer lubricant lifetime, increased equipment lifetime, extended operating limits, and reduced the amount of lubricant being disposed and met environmental compliance requirements.
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