AeroShell Oil W100 Plus

Shell has developed a new aviation monograde which takes advantage of modern additive technology. This oil, AeroShell Oil W100 Plus, is a SAE 50 grade similar to the traditional W100 grade, but includes an anti wear additive, an anti corrosion additive and a metal passivator.

How do these additives work and what advantage do they give you?

I am often asked about whether after market “wonder cure” additives benefit an engine and if they can be used in aviation piston engine oils. The general rule is that, unless they have been properly tested and approved for use in aircraft engines, they should not be used. Often these additives at best give no benefit at all, or can even cause the engine harm.