AeroShell Oil W120 is an ashless dispersant oil specifically developed for aviation piston engines. It reaps the performance benefits of combining non-metallic additives with selected high viscosity index base oils. No general rule exists for every engine type when choosing the correct grade of oil; however, based on the average ambient outside temperature at engine start-up, the most common grades are SAE 40, SAE 50, and SAE 60, which equate to AeroShell Oil W80, W100, and W120 respectively.
Traditionally, the choice is associated with climatic zones: AeroShell W80 for cold climate regions (-17 to 21°C), AeroShell Oil W100 for temperate regions (16 to 32°C), and AeroShell Oil W120 for warmer climates (above 26°C)
AeroShell Oils W80, W100, and W120 are produced to meet fully the SAE specification J1899 (Grades SAE 40, 50, and 60 respectively).
AeroShell W120 is available in quarts or 5L jugs.