Aeroshell 5 Aviation Grease

AeroShell Grease 5 is a high-temperature aviation grease formulated for aircraft components operating under high loads, high speeds, and elevated temperatures. Its mineral oil base and clay-based Microgel thickener provide good load-carrying capability, oxidation and corrosion resistance, and excellent resistance to water washout.

With a useful operating temperature range of -18°C to +149°C (-0.4°F to +300°F), AeroShell Grease 5 is particularly well suited for aircraft wheel bearings, propellers, and high-speed accessories such as magnetos, generators, and starters. Shell identifies AeroShell Grease 5 as a high-temperature, clay-thickened grease and notes that it is available in the Americas.

AeroShell Grease 5 Features

• High-temperature aviation grease for demanding aircraft lubrication applications
• Mineral oil base with a clay-based Microgel thickener
• Useful operating temperature range of -18°C to +149°C (-0.4°F to +300°F)
• Good load-carrying capability
• Excellent resistance to water washout
• Inhibited against oxidation and corrosion
• Suitable for high-speed, high-temperature lubrication applications
• Particularly suited to aircraft wheel bearings and certain engine accessories

AeroShell Grease 5 Applications

AeroShell Grease 5 is particularly effective as an aircraft wheel bearing grease, especially where high landing speeds and braking loads can result in elevated bearing temperatures. Shell also identifies the grease for aircraft and engine accessories operating at high speeds and relatively high temperatures.

Typical applications include:

• Aircraft wheel bearings
• Aircraft propellers
• Magnetos
• Generators
• Starters
• Other high-speed, high-temperature aircraft components where specified

For rolling bearings that must start at temperatures approaching -18°C (0°F), Shell notes that adequate time should be allowed for the grease to channel before normal bearing operation.

AeroShell Grease 5 Specifications

High-Temperature Aircraft Wheel Bearing Grease

AeroShell Grease 5 is particularly useful where aircraft wheel bearings experience high temperatures caused by high landing speeds, rolling friction, and braking. Shell's technical information specifically identifies it as a wheel bearing grease and notes its use on high-speed aircraft and engine accessories.

Unlike many general-purpose aviation greases, AeroShell Grease 5 is designed around high-temperature performance rather than extremely low-temperature operation. Its useful temperature range extends to +149°C (+300°F), while its lower operating limit is approximately -18°C (-0.4°F).

AeroShell Grease 5 for Aircraft Maintenance

For aircraft maintenance and MRO facilities, AeroShell Grease 5 provides a specialized option for high-temperature lubrication applications where the applicable aircraft or component documentation calls for this grease or an approved equivalent.

Its clay-based Microgel thickener provides excellent water resistance and working stability. Shell explains that Microgel is a specially treated clay thickener that provides very little change in consistency with temperature variation, excellent water resistance, low oil separation, and good working stability.

Important: MIL-G-3545C and DTD.878A are identified by Shell as obsolete specifications. Always verify the current approved product and applicable specification against the aircraft or component manufacturer's maintenance documentation. Refer to the current AeroShell Technical Data Sheet (TDS) and Safety Data Sheet (SDS) for complete product information.

Frequently Asked Questions

What is AeroShell Grease 5 used for?

AeroShell Grease 5 is a high-temperature aviation grease used particularly for aircraft wheel bearings, propellers, and high-speed accessories such as magnetos, generators, and starters.

What is the temperature range of AeroShell Grease 5?

AeroShell Grease 5 has a useful operating temperature range of -18°C to +149°C (-0.4°F to +300°F).

Is AeroShell Grease 5 mineral oil based?

Yes. AeroShell Grease 5 uses a mineral oil base.

What type of thickener does AeroShell Grease 5 use?

AeroShell Grease 5 uses a clay-based Microgel thickener. Shell identifies Microgel as a specially treated clay thickener used in several AeroShell aviation greases.

What specification does AeroShell Grease 5 meet?

Shell lists MIL-G-3545C and DTD.878A as obsolete specifications for AeroShell Grease 5. Shell also lists DCSEA 359/A as an equivalent French specification and OMat428A for Rolls-Royce. Always verify the current required specification before use.

Can AeroShell Grease 5 be used for aircraft wheel bearings?

Yes. Aircraft wheel bearings are one of the principal applications identified by Shell for AeroShell Grease 5, particularly where high landing speeds can result in elevated bearing temperatures.

Can AeroShell Grease 5 be used at low temperatures?

AeroShell Grease 5 has a useful operating range down to approximately -18°C (-0.4°F). Shell notes that rolling bearings required to start at temperatures as low as -18°C should be allowed adequate time for the grease to channel before operation.

Can AeroShell Grease 5 be mixed with other aviation greases?

Grease compatibility should be verified before mixing products. Do not assume that two aviation greases are compatible based solely on their intended applications. Follow the applicable aircraft or component manufacturer's lubrication instructions and the grease manufacturer's compatibility guidance.