AeroShell Oil W100 Plus is a new 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. AeroShell Oil W100 Plus brings together the best qualities of two of the world's best-selling four cycle aviation oils. It has the single grade, ashless dispersant performance found in AeroShell W100 and the anti-wear/anti-corrosion additives of AeroShell Oil W 15 - 50 Multigrade. It's single grade heritage means outstanding resistance to heat, especially in the summer months. Its ashless dispersant formulation reduces deposits of harmful metallic ash in combustion chambers. And its advanced additives work against rust, corrosion and wear in a way no other single grade does. There simply is no better single grade aviation oil.