A Method of Generating and Appraising the Five Viscosity Loss Parameters of Lubricating Oil – The Viscosity Loss Trapezoid
Presented at Technische Akademie Esslingen (TAE) Tribology Colloquium, Germany - 1992Ninth International Savant Conference on the Viscometry of Automotive Lubricants, Deerborn, MI - 1993
Written by T.W. Selby, Savant Inc. – Rohm GmbH, Darmstadt, Germany, January 20, 1992 – Elf France, Lyons, France, January 22, 1992 – TOTAL-Technique in Le Havre, France, January 24, 1992 – Chevron Chemical Company, Rotterdam, Netherlands, January 27, 1992 – 8th International Technische Akademie Esslingen (TAE) Tribology Colloquium, Stuttgart/Ostfildern, Germany, January 14-16, 1992 – Savant Conference – Ninth International Conference on the Viscometry of Automotive Lubricants, October 13-14,1993
Abstract: A new approach to appraising the total viscous influence of VI Improvers, synthetic fluids and their combinations is presented. The technique utilizes four viscometric measurements, two at low shear rates and two at very high shear rates, to generate five different measures of viscosity loss. The technique is described and a number of applications shown for both straight grade and multigrade engines oils.