Mobil Jet™ Oil 254 is a third-generation, high thermal stability (HTS) synthetic turbine engine oil that has delivered more than 30 years of trusted performance. Designed for use in demanding environments, this advanced lubricant offers superior resistance to high-temperature degradation, exceptional deposit control, and reliable engine protection—making it an ideal choice for general aviation and private aircraft maintenance professionals.
Thin Film Oxidation Test Predicts oil’s deposit formation under high-temperature oxidative stress conditions.
In the Thin Film Oxidation Test, Mobil Jet Oil 254 scored an impressive 97 out of 100—outperforming both competitive HTS and standard Type II oils. This test simulates the oxidative stress encountered in turbine bearing and seal compartments, and Mobil Jet Oil 254’s results correlate with reduced carbon and sludge formation in actual field use.
Hot Liquid Process Test measures oil’s tendency to form deposits in flooded engine areas.
ExxonMobil’s Hot Liquid Process Test showed that Mobil Jet Oil 254 produces 50% fewer deposits than a leading HTS competitor. This is crucial for reducing coking in oil pressure lines and flooded engine regions, minimising the risk of restricted oil flow and unscheduled maintenance.
Oxidation and corrosion testing evaluates oil’s resistance to oxidation and its metal corrosion potential.
Oxidation and corrosion testing confirm Mobil Jet Oil 254 offers a 40% advantage in high-temperature bulk oil stability over competing HTS oils. This translates to greater protection against thermal breakdown and corrosion of critical engine components.
First image clear of the carbon and sludge deposits vs the second image.
Mobil HyJet V offers industry-leading protection against rust and corrosion, even in environments prone to high moisture ingress.
Its advanced formulation ensures hydraulic systems remain free of corrosive damage, enhancing reliability and reducing long-term maintenance risks.
Additional benefits include reduced oil consumption due to low evaporative loss, excellent engine protection at extreme temperatures, and reliable cold-weather startups down to -40°F.
Contact us today to learn more about how Mobil Jet Oil 254 Mobil Jet Oil 254 is a proven, high-performance solution for general aviation mechanics focused on performance, durability, and cost-efficiency. Check out our general aviation market section for more information and to download our brochure.
For more than 100 years, ExxonMobil Aviation has been a technology leader, with aviators and engineers relying on their expertise to push the boundaries of flight. ExxonMobil Aviation fuels and lubricants products have been chosen for some of history’s most celebrated aircraft and space programs.
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