Масло, чью славу присвоила компания Amsoil
https://oil-glup.ru/threads/samye-krutye-motornye-masla-vsex-vremen.178/page-6#post-24365
The museum of the most outstanding motor oils, with complete online analyses - FTIR, VOA (ICP, viscosity, aniline point, and more. Unique, vital, preserving the history of the industry.