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| E^onMobil Aviation Lubricants | ||
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| Mobilgrease 28 Synthetic Aviation Grease Product Description Mobilgrease 28 is a supreme performance, wide-temperature, antiwear grease designed to combine the unique features of a polyalphaolefin (PAO) synthetic base fluid with an organo-clay (non-soap) thickener. Its consistency is between an NLGI No. 1 and No. 2 grease. It offers outstanding performance over a wide temperature range. The wax-free nature of the synthetic base fluid, together with its low coefficient of traction compared with mineral oils, provide excellent low temperature pumpability, very low starting and running torque, and can reduce operating temperatures in the load zone of rolling element bearings.The clay thickener gives Mobilgrease 28 a high dropping point value of around 300°C, which provides excellent stability at high temperatures. Mobilgrease 28 resists water washing, provides superior load-carrying ability, reduces frictional drag, and prevents excessive wear. Tests show that Mobilgrease 28 lubricates effectively rolling element bearings under conditions of high speeds and temperatures. Mobilgrease 28 has also shown superior ability to lubricate heavily loaded sliding mechanisms, such as wing flap screwjacks.For more than 30 years, Mobilgrease 28 has been the multi-purpose grease of choice for military and related aviation applications, worldwide. | ||
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| Features and Benefits A particular requirement of aviation greases is the need to resist high temperature stresses, while providing excellent starting and low torque at low-temperature. To meet this combination of needs ExxonMobil product formulation scientists chose proprietary synthetic base oils for Mobilgrease 28 because of their low volatility, exceptional thermal/oxidative resistance, and superb low-temperature capability. Formulators chose specific thickener chemistry and a proprietary additive combination which would maximize the benefits of the synthetic base oils.Mobilgrease 28 meets the requirements of key military and commercial aviation specifications and has built up a superb reputation for performance and reliability among users around the world.Mobilgrease 28 provides the following advantages and potential benefits: | ||
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| Features_Advantages and Potential Benefits_ High viscosity index (VI) synthetic base stock with no Allows wide operating temperature range - outstanding wax content high and low temperature performanceProvides thicker fluid films protecting against wear of equipment parts operating at high temperatureCauses low resistance _during start-up at very low temperatures_ Excellent protection against wear and corrosion Superb bearing protection and extended bearing life and _reduced bearing replacement costs_ Extreme-pressure protection characteristics_Avoids excessive wear, even under shock load_ High thermal/oxidative stability_Long relubrication intervals_ High resistance to water washout Maintains excellent grease performance in adverse _weather and other water-exposure conditions_ | ||
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