Straight Mineral Aviation Engine Oil AeroShell 100 is a premium-quality straight mineral aviation piston engine oil blended from selected high-viscosity index base stocks. Because it does not contain ashless dispersant (AD) additives, it is highly recommended for the critical break-in period of new or newly overhauled four-stroke aircraft engines, allowing piston rings to seat properly. MFG Part Numbers:• Quart (Case of 6): 550050799• 55-Gallon Drum: 550041131 Key Features & Benefits Engine Break-In Optimization: Formulated without dispersants to allow proper friction for piston ring seating during initial operating hours. High Thermal Stability: Delivers exceptional resistance to oxidation and breakdown under severe high-temperature conditions. Superior Lubrication: Provides excellent protection against wear, reducing friction for critical internal engine components. Vintage Aircraft Compatible: The ideal choice for older or vintage aviation powerplants where modern ashless dispersant (AD) oils are not recommended. Technical Specifications SAE Viscosity Grade 50 U.S. Specification SAE J1966 Grade 50 (Formerly MIL-L-6082E) British Specification Approved J-1966 SAE Grade 50 (Replaces DERD 2472) Military Codes NATO Code: O-117 (Obsolete) | Joint Service: OM-270
