EXXONMOBIL® AVIATION Mobil Jet Oil 254 is a third-generation oil formulated to deliver exceptional high-temperature thermal stability (HTS), excellent resistance to coking and deposit control as well as exceptional oxidation and corrosion protection. It meets the demanding requirements of latest technology aircraft-type gas turbines operating over a wide range of severe operating conditions. When compared to a typical Type II lubricant, Mobil Jet Oil 254 reduces bulk oil oxidation by up to 50 percent and shows deposit control capability 50 F higher. These properties have been confirmed in various laboratory tests including; the Corrosion-Oxidation Stability Test, Alcor Deposition Test, Vapor Phase Coker, Erdco High-Temperature Bearing Test, Ryder Gear and the Mobil Thin Film Oxidation Test.The closely controlled low-temperature viscosity of Mobil Jet Oil 254, along with its low pour point (below -54 ºC), ensure good low-temperature fluidity to permit starting and lubrication at temperatures as low as -40 ºC. In extensive laboratory testing and in-flight experience, Mobil Jet Oil 254 also exhibits excellent bulk oil stability at temperatures up to 232 ºC (450 ºF) for extended periods. The evaporation rate at these temperatures is low enough to prevent excessive loss of volume. The load-carrying ability of Mobil Jet Oil 254 comes from its synthetic base stock viscosity and, therefore, is not subject to loss from viscosity index additive shear.
Product Features & Benefits:
Excellent thermal and oxidation stability reducing the formation of carbon (carbon coking) and sludge deposits. Helps operators reduce shop visits and maintenance costs. Maintains engine efficiency and extends engine life. Reduces bulk oil oxidation by 50% and increases deposit control by 50 ºF
Excellent wear and corrosion protection extending seal, gear and bearing life. Reduces engine maintenance.
Viscosity and shear stability across wide temperature range providing effective lubrication at high operating temperatures
Chemically stable at high operating temperatures reducing evaporation losses and lowering oil consumption
Excellent resistance to foaming maintaining film strength under rigorous operating conditions
Good low temperature fluidity permiting start-up and ensuring effective lubrication of critical components at temperatures as low as -40 °F.