AeroShell Oil W 100 is a straight-grade SAE 50 mineral ashless dispersant oil designed to ensure piston engine cleanliness, wear protection, and deposit-free performance in certified four-stroke aircraft engines.
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Shell AeroShell Oil W 100

AeroShell Oil W 100 is a straight-grade SAE 50 mineral ashless dispersant oil designed to ensure piston engine cleanliness, wear protection, and deposit-free performance in certified four-stroke aircraft engines.

Category:

Shell AeroShell Oil W 100

Mineral ashless dispersant oil for certified aircraft piston engines

  • Blended with high viscosity index base oils and non-metallic additives

  • Does not produce metallic ash — preventing spark plug fouling and pre-ignition

  • Promotes internal cleanliness and helps keep engines sludge-free

  • Helps reduce oil consumption and supports full Time Between Overhaul (TBO)

  • Offers high wear protection for stressed engine parts under extreme loads

  • Recommended for four-stroke cycle certified reciprocating piston aircraft engines

  • Suitable for both fuel-injected and turbocharged configurations

  • Commonly used in Lycoming and Continental flat engines

  • May be used during break-in when permitted by engine manufacturer

  • Not recommended for automotive use unless officially approved

Global Product Code: 001A0074



Application:

AeroShell Oil W 100 is an SAE 50 grade mineral-based ashless dispersant oil specifically engineered for use in certified four-stroke cycle aircraft piston engines. It is part of the AeroShell W Oil series, which are free of metallic ash components to minimize combustion chamber deposits and ensure spark plug performance.

Performance Features & Benefits:

  • Clean Engine Operation: Helps prevent sludge accumulation and deposit build-up in combustion areas.
  • Oil Efficiency: Supports reduced oil consumption over time.
  • Extended Engine Life: Contributes to reaching full TBO through effective wear protection.
  • Ashless Additive System: Prevents metallic residue that could cause pre-ignition or plug fouling.
  • Thermal Stability: Formulated with high viscosity index base oils for consistent performance.

Main Application Areas:

  • Certified four-stroke (reciprocating) aircraft piston engines
  • Fuel-injected and turbocharged engines
  • Lycoming and Continental flat engines in moderate climates
  • Radial engine operations where SAE 50 oil is specified
  • Break-in use when approved by engine manufacturers

Specifications & Approvals:

  • SAE J1899 Grade 50 (replaces MIL-L-22851D)
  • Russian: MS-20
  • Joint Service Designation: OMD-250
  • Textron Lycoming: 301F
  • Continental: MHS 24B
  • Pratt & Whitney: Service Bulletin 1183
  • Curtiss Wright & Franklin Engines: Refer to relevant service bulletins

Environmental & Safety Information:

  • This product poses no significant hazard when used as directed and with good hygiene.
  • Use gloves when handling used oil; wash exposed skin with soap and water.
  • Do not release into the environment; dispose of at authorised oil collection points.
  • Safety Data Sheet (SDS) available via inquiry

Technical Specifications:

Property Typical Value Method
SAE Viscosity Grade 50 SAE J1899
Density @ 15°C 887 kg/m³ ASTM D4052
API Gravity 27.8 ASTM D287
Kinematic Viscosity @ 40°C 204 mm²/s ASTM D445
Kinematic Viscosity @ 100°C 18.1 mm²/s ASTM D445
Viscosity Index > 96 ASTM D2270
Pour Point < -21°C ASTM D5949
Flash Point > 250°C ASTM D92
Total Acid Number < 0.5 mgKOH/g ASTM D664/974
Sulphur Content 0.38% ASTM D4951
Copper Corrosion (3h @ 100°C) 1a ASTM D130
Ash Content < 0.004% ASTM D482
Trace Sediment Passes ASTM D2273
Foaming Tendency Passes ASTM D892
Trace Metal Content Passes ASTM D4951

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