It used to be that professional aircraft operators would need a wide variety of aircraft grease when doing maintenance on their planes. Due to the wide range of operating temperatures, weights and environmental conditions that occurred on different parts of a plane, operators would need a full collection of aircraft lubricants just to make that each part of the plane was properly taken care of. This changed, though, when after years of research Boeing introduced BMS 3-33 grease. Finally, one type of grease could stand up to a variety of different conditions and was safe for use throughout the entire plane. This protection is now available to the public with AeroShell Grease 33, a synthetic grease composed of a lithium complex thickened synthetic base oil with corrosion and oxidation inhibitors and load carrying additives. Not only can it stand up to weights and environmental conditions, it also has a useful operating temperature range is –73°C to +121°C.
AeroShell Grease 33 can be used for routine lubrication on Boeing aircraft where MIL-PRF-23827C or BMS 3-24 is specified. AeroShell Grease 33 can also be used in some applications on Boeing aircraft which require use of MIL-G-21164. Other applications on Boeing aircraft which require use of MIL-G-21164 and other greases are being reviewed and in due course Boeing will issue details of the full range of applications. For the current status, refer to the latest issue of Boeing Service Letter "BMS 3-33 General Purpose Aircraft Grease".
AeroShell Grease 33 can be used for routine lubrication in applications where MIL-PRF-23827C is specified on aircraft manufactured by McDonnell Douglas, Airbus, BAe Regional Aircraft, Canadair, Lockheed, Embraer, Fokker and Gulfstream (except for wheel bearings, applications above 121°C and sliding applications requiring molybdenum disulphide). Other aircraft manufacturers are evaluating AeroShell Grease 33 with the aim of approving it for use on their aircraft.
U.S. Meets: Approved MIL-PRF-23827C (Type I )
NATO Code: G-354
Joint Service Designation: N/A
Boeing: Approved BMS 3-33A