AeroShell Oil 100 is a single‑grade SAE 50 mineral oil formulated for aviation piston engines, especially suited for engine break‑in use. It’s blended from high viscosity‑index base stocks, with only minimal additive content—namely a pour‑point depressant (for improved low‑temperature flow) and an anti‑oxidant. It contains no dispersant additives

• AeroShell W Oils were the first non-ash dispersant oils to be used in aircraft piston engines.
• They combine non-metallic additives with selected high viscosity index base stocks to give exceptional stability, dispersancy and anti-foaming performance. These additives leave no metallic ash residues that can lead to deposit formation in combustion chambers and on spark plugs, which can cause pre-ignition and possible engine failure.

Specifications, Approvals & Recommendations

• Promote engine cleanliness.
• Help keep engines sludge free.
• Help reduce oil consumption.
  Help engines reach TBO (Time Between Overhaul).
• Protect highly stressed engine parts against scuffing and wear.
• U.S. – SAE-J-1899 Grade 60 replaces MIL-L-22851D
• British – SAE-J-1899 Grade 60
• French – AIR 3570 Grade SAE 60
• NATO Code – O-128 Obsolete
• Joint service Designation – OMD-370
• Pratt & Whitney Service Bulletin – 1183-S

Part Number

MIL-L-22851D