Can aeroshell 33ms be used in place of aeroshell 7?

Answer 1

Do you mean Aeroshell 17? Aeroshell 33MS is an alternate for Aeroshell 17, not Aeroshell 7.

AeroShell Grease 33MS An Extreme pressure (EP) Grease
AeroShell Grease 33MS is an extreme pressure (EP) grease based on the proven lithium complex technology of AeroShell Grease 33, and is fortified with 5% Molybdenum Disulphide. The benefits of Grease 33MS include: Improved anti-wear and corrosion resistance over AeroShell Grease 17; It is fully compatible with AeroShell Grease 33, so reduces the risks and problems associated with misapplication; Load carrying and EP properties equal to that of the well established AeroShell Grease 17; Fully approved to MIL-G-21164D. It possesses enhanced anti-wear and anti-corrosion properties and is particularly suitable for lubricating heavily loaded sliding steel surfaces, such as, for example, bogie pivot pins on aircraft landing gear-assemblies. AeroShell Grease 33MS is a direct alternative to AeroShell Grease 17, but when changing from (clay-based) ASG 17 to (Li-complex based) ASG 33MS, the normal rules on grease changing should be applied.

For a comparison:

AeroShell Grease 7 Advanced Multipurpose Airframe Grease
Microgel thickened, synthetic diester oil base.
Corrosion inhibited and fortified to resist oxidation, it combines excellent load-carrying capacity with a useful temperature range of -73°C to + 149°C. Recommended for highly loaded gears and actuator screw mechanisms, as well as for instrument and general airframe lubrication.


Source: http://www.apex-inc.biz/oillubegrease.htm