AeroShell Oil W100 Plus is a single grade oil that combines proven AeroShell ashless dispersant technology with advanced antiwear additives. It is the oil for pilots who want a single grade that delivers extra protection and performance. It has the single grade, ashless dispersant performance found in AeroShell W 100 and the anti-wear/anti-corrosion additives of AeroShell Oil W 15W50 Multigrade. The single grade heritage means outstanding resistance to heat, especially in the summer months. The ashless dispersant formulation reduces deposits of harmful metallic ash in combustion chambers. And the advanced additives work against rust, corrosion and wear in a way no other single grade does. Case of 12 one quart bottles.