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

Key Features

• Used primarily during break-in of new or freshly overhauled certified four‑stroke piston engines where dispersant oil is not required.
• Meets SAE J‑1966 Grade 50 specification; also holds military approvals and is listed on the US Navy QPL and UK MoD TAPL.
• Designed to protect engine components better than traditional mineral oils, helping preserve performance between overhauls

Typical Applications

• Break-in lubrication for certified aviation piston engines (non‑Porsche) post-overhaul
• Engines that specifically require straight mineral oil, including many antique or vintage aircraft.