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 high viscosity index compared to mineral oils, provide excellent low temperature pumpability, very low starting and running torque, and can help reduce operating temperatures in the load zone of rolling element bearings.
The clay thickener gives Mobilgrease 28 a high dropping point value of around 300ºC, 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 excellent ability to lubricate heavily loaded sliding mechanisms, such as wing flap screw jacks.
For more than 30 years, Mobilgrease 28 has been the multi-purpose grease of choice for military and related aviation applications, worldwide.
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 synthetic hydrocarbon 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 helps 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.
NATO Specification: G-3952 US Military Specification: NLGI Grade 1 US Military Specification: DOD-G-24508A, Amendment 4 US Military Specification: MIL-G-81322 Grade B US Military Specification: MIL-PRF-81322G
Mobilgrease 28 is designed for: The lubrication of plain and rolling bearings at low to high speeds, and splines, screws, worm gears, and other mechanisms where high friction reduction, low wear, and low lubricant friction losses are required. Landing wheel assemblies. Control systems, screwjacks, servo devices, actuators, sealed-bearing motors and oscillating bearings. Helicopter rotor bearings on aircraft and on naval shipboard auxiliary machinery. It also can be used where superseded specifications MIL-G-81322 (WP), MIL-G-7711A, MIL-G-3545B, and MIL-G-25760A may be called for. Mobilgrease 28 is also recommended for industrial lubrication, including sealed or repackable ball and roller bearings wherever extreme temperature conditions, high speeds, or water washing resistance are factors. Typical industrial applications include: Conveyor bearings, Small alternator bearings operating at temperatures near 177ºC and High-speed miniature ball bearings, and bearing situations where oscillatory motion, vibration, and fretting create problems.
The recommended operating temperature range is -55º to 180ºC with appropriate relubrication intervals.
Overall Rating for Exxon Mobil Mobilgrease 28 Red MIL-PRF-81322G Spec Synthetic Aviation Grease - 2 Kg (4.4 lb) Can
|(based on 3 reviews)|
100% Recommend this product (3 of 3 responses)
August 24, 2016
If you just want grease, go cheap. If you want the right stuff go MIL-PRF-81322G. It meets the MFGRs spec on both my aircraft. Aero Shell 22 meets the same spec, but in my youth, I liked the red Wolf's Head for my cars so I have a fondness for the red stuff.
ProsI get almost 10 years from the 4.4 Lb can.
August 28, 2014
Mobil 28 - 5 pound can?
Some of us own a grease gun system designed to fit on a 5 pound can of grease. When I saw this product was now packaged in a 4.4 pound can, I was concerned about whether it would work with my grease gun. While I have not actually used it yet, this can appears to be dimensionally identical to the cans which formerly held five pounds of grease. Hopefully, this information is helpful to someone.
ProsThe can fits my grease gun.
ConsOnly 4.4 pounds of grease in a 5 pound can.
By Sayed Ahmed
April 15, 2014
Helicopter Bell 407 use
ProsWe like to buy 05 unit of 4.4 Lbs Can for Bell 407 helicopter use
Exxon Mobil Mobilgrease 28 Red MIL-PRF-81322G Spec Synthetic Aviation Grease - 2 Kg (4.4 lb) Can