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More than 250 participants from 18 countries attended this meeting offering a total of 24 papers presented by speakers from 11 countries.
The program of the colloquium provided an almost complete review of the present state of technology in the field of multigrade engine oils and their development. Besides the requirements of engines for specific engine oils and the fundamentals of rheology, the following main subjects were discussed: Viscosity classification of engine oils development in the USA and in Europe; Chemical and physical properties of viscosity index improvers; Cold flow behavior and high temperature viscosity of VI-improver containing oils; Influence of mechanical, thermal, and oxidative stresses; Engine performance of multigrade engine oils; Startability and pumpability of engine oils.
Some of the more important results and conclusions related to the subject of the relationship of engine oil viscosity to engine performance are reported and discussed.
Technische Akademie Esslingen, Ostfildern,