Mobil™ HyJet™ V is a cutting-edge, phosphate ester-based hydraulic fluid engineered to meet the demanding requirements of modern private and general aviation aircraft. Designed for use in systems requiring a Type V fluid, it offers superior performance in key areas crucial to safe, reliable aircraft operation.
Mobil HyJet V boasts a high flash point, exceeding both Airbus NSA 307110 and Boeing BMS 3-11P Type V, Grade A specifications. In ASTM D92 flash point testing, it delivers typical values significantly higher than competing fluids, offering an extra layer of fire safety for aircraft operating under elevated temperature conditions.
Wear Scar in mm after one hour at 600 rpm 75oC and force as shown. The Four Ball Wear Test (ASTM D 4172) produced generally smaller scars for Mobil HyJet V hydraulic fluid than for samples of other Type IV and Typer V commercial products. The difference in wear production performance between MobilTM HyJet V hydraulic fluid and the competitive Type V product was especially pronounced.
Wear protection is critical in maintaining hydraulic component longevity. In the ASTM D4172 Four Ball Wear Test, Mobil HyJet V consistently produced smaller wear scars compared to both Type IV and other commercial Type V fluids. This improved lubricity translates to enhanced protection against metal-to-metal contact, especially under high-stress operating conditions.
The airbus NSA 307110 Ampoule test measures a fluid’s resistance to reaction with water (hydrolic stability) and molecular breakdown at high temperatures (thermal stability).
In the Airbus NSA 307110 Ampoule Test, which simulates long-term exposure to water and heat, Mobil HyJet V demonstrated a service life of 1240 hours—more than double the performance of Mobil HyJet IV-A and far superior to other Type IV alternatives (often under 250 hours). This results in reduced maintenance intervals and improved operational efficiency.
The ASTM D 665A test identifies rust on polished steel rods that have been exposed to 10% water in fluid for 24 hours at 60oC.
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.
Certified to SAE AS1241 Type V and approved by Airbus, Boeing, ATR, Gulfstream, and Fokker, Mobil HyJet V ensures full system compatibility, making it the fluid of choice for aviation mechanics seeking performance, safety, and reliability.
Contact us today to learn more about how Mobil HyJet V can transform your hydraulic system performance or 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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