Mobilgrease 33

Mobilgrease 33

Mobilgrease 33 is a high-performance lithium-complex grease designed for general-purpose aircraft use. Its consistency is between the NLGI grades 1 and 2. Mobilgrease 33 utilizes a 100% polyalphaolefin base oil and premium additives which ensure outstanding lubrication performance over a wide temperature range and operating conditions.

Advantages and Potential Benefits:

The lithium complex thickener system provides excellent structural stability and resistance to water wash-out. Polyalphaolefin base oil is used in Mobilgrease 33 because of its exceptional thermal/ oxidative resistance potential, low volatility, and superb low-temperature capability, without the potential vulnerability of an ester base oil to degradation from reaction with water. The synthetic polyalphaolefin base oil offers excellent low-temperature mobility/pumpability and very low starting and running torque values. In addition, the state-of-the art additive system in Mobilgrease 33 provides superior rust and wear protection and load-carrying capacity compared to aviation greases that meet the minimum requirements of the MIL-PRF-23827 specification.

  1. High viscosity index PAO base stock offers a very wide operating temperature range – outstanding high and low temperature performance and excellent lubricant film protection at high temperatures
  2. Exceptional resistance to thermal and oxidative degradation leading to long grease an lubricated part service life
  3. Excellent protection against wear, corrosion and rusting offering excellent bearing and component protection
  4. Extreme-pressure characteristics leading to the prevention of excessive wear, even under shock load
  5. High resistance to water washout allowing for excellent grease performance in adverse weather and other water-exposure conditions


  1. Mobilgrease 33 is a true multipurpose aviation grease intended for us in highly loaded anti-friction bearings, gears and actuators as well as instruments, high speed bearings (though not recommended for wheel bearings), and general airframe lubrication, over operating temperatures from -73C to 121C.
  2. It can be used in all applications for which the aircraft manufacturer specifies US Military Specification MIL-PRF-23827, Type1 (Grease, Aircraft and Instrument, Gear and Actuator Screw, Grease thickened with metallic soap), Boeing BMS 3-33B (Grease, Aircraft, General Purpose), and Airbus AIMS09-06-002/SAE AMS3052 (Grease, General Purpose, Airframe, Low Temperature Range, Lithium thickened).
  3. Mobilgrease 33 is listed in the Qualified Products List of Airbus, Boeing, and the US Military for these specifications. The NATO Code Number for Mobilgrease 33 is G-354.

Product Specifications

Meets or exceeds the requirements of:
Has the following approvals:
MILITARY MIL-PRF-23827C (Amendment 2, Type I) and NATO G-354
Has the following builder approvals:
Airbus AIMS 09-06-002 and Boeing BMS 3-33B, Type 1

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