Jack Harter helicopter flying above lush mountains

Mobil Jet™ Oil 387 Approved for Use in Rolls-Royce Engines Commonly Found in Helicopters

  • With this approval, aircrafts that use Rolls-Royce M250 and RR300 engines have access to ExxonMobil’s highest performance jet oil
  • Jack Harter Helicopters, a leader in Hawaiian helicopter tourism, is converting its fleet to Mobil Jet Oil 387 as a result

SPRING, Texas – ExxonMobil announced today 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 M250is 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.

Jack Harter will also use Mobil Jet Oil 387 on the clutch parts of its external load helicopters to help improve load carrying.

“Due to the high level of use and diverse routines of our helicopters, engine reliability is critical to our operations” said Casey Riemer, Special Projects Manager at Jack Harter Helicopters. “It’s comforting to know that with this conversion we are maintaining the excellent performance of our engines, while gaining better seal performance and load carrying capabilities.”

Mobil Jet Oil 387 is produced at the state-of-the-art Port Allen aviation lubricants plant in Baton Rouge, Louisiana. The 90,000-square foot facility is equipped with advanced production technologies designed to raise the bar in product quality and integrity, including in-line blending, high-speed quart line and flow-through racking systems. The plant received the Zero Net Waste to Landfill Silver Validation from UL, which demonstrates ExxonMobil’s commitment to reducing environmental impacts and providing airlines with cleaner lubricant choices through Mobil-branded lubricants, including jet oils, greases and hydraulic oils. ExxonMobil is the first petroleum products company to secure this validation.

To learn how using Mobil Jet Oil 387 can help your business, visit www.mobiljetoil387.com.

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About Mobil Jet Oil 387

Introduced globally in 2012, Mobil Jet Oil 387 is the most advanced turbine engine oil that ExxonMobil has produced in its almost 120-year history of serving the aviation industry. Mobil Jet Oil 387 is approved for use by engine manufacturers in a wide range of models and components. It also meets a range of demanding industry specifications, including SAE AS5780 High Performance Capability and U.S. Military Specification MIL-PRF-23699-HTS.

About ExxonMobil

ExxonMobil, one of the largest publicly traded international energy companies, uses technology and innovation to help meet the world’s growing energy needs. ExxonMobil holds an industry-leading inventory of resources, is one of the largest refiners and marketers of petroleum products, and its chemical company is one of the largest in the world. To learn more, visit exxonmobil.com and the Energy Factor.

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