AeroShell Turbine Oil 750 Synthetic Turbine Engine Oil
You want a something that will last over the coarseness of time? Shell has hard-lined its approach to lubing turbine engines and in the process has arrived at a tested and proven method to get said engines slick: AeroShell Turbine Oil 750.
An contrast to others in the product line, AeroShell Turbine Oil 750 is a thicker formulation. It is made in conjunction with British gas turbines to provide good load-bearing capabilities for the propeller reduction gearbox.
Using non-metallic dispersant additives, AeroShell has been a pioneer in the development of this product sector. As mentioned, this ester-based oil is specifically geared (no pun intended) for British and Russian turbo-prop engines, especially ones calling for mineral turbine oils.
As a synthetic ester, AeroShell 750 is thus compatible. Just keep it away from incompatible seal materials as well as certain paints and plastics as this oil may negatively impact their function.
So if description sounds right for your aircraft, let your engine feast and be merry.