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ExxonMobil has announced that Mobil Jet Oil 387 is approved for use in Rolls-Royce M250 and RR300 engines which are most commonly found in helicopters. The Rolls-Royce M250 is one of the most popular turbine engines in the world with over 170 different helicopter and fixed-wing applications in both civil and military aircrafts.
Helicopter engines are high temperature applications and require jet oils that provide excellent seal compatibility. As ExxonMobil’s most advanced aviation turbine engine oil, Mobil Jet Oil 387 provides superb seal compatibility and prolonged life, offering protection against oil leaks. Mobil Jet Oil 387 also offers outstanding deposit control and oxidative stability, as well as improved load carrying compared to other legacy High Thermal Stability (HTS) oils.
“We expect that by using Mobil Jet Oil 387, helicopter operators will see improved seal compatibility, leak prevention and wear performance when compared to other legacy High Thermal Stability oils,” said Ed Barnes, chief aviation engineer at ExxonMobil. “Maintenance professionals will also see an added benefit in that Mobil Jet Oil 387 is lighter in color, making it easier for them to evaluate if there is coking or deposits.”
As a result of this latest approval, Jack Harter Helicopters, a Kauai-based Hawaiian helicopter tour and charter company, is the first helicopter company in the process of working with ExxonMobil to convert its fleet of M250 engines from a legacy HTS oil to Mobil Jet Oil 387. Jack Harter operates a fleet of five helicopters – four of which are MD 500E helicopters operating with M250 engines. Each of their helicopters averages around 1,200 flight hours annually between tours, charter flights and external load services.