SEDL / STP / STP621_S4-EB / STP27341S

Development of a High Shear Rate Capillary Viscometer for Engine Oils

Rein, SW
Beacon Research Labs. Texaco, Inc., Beacon, NY

Alexander, DL
Beacon Research Labs. Texaco, Inc., Beacon, NY

Pages: 10    Published: Jan 1980

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Abstract

A high shear rate capillary viscometer has been developed. It is suitable for measuring the viscosity of engine oils at shear rates of 10⁵ to 10⁶ s^-1 and at temperatures to 150°C, conditions which are within the range experienced by oils in automobile engines. It has proven useful for evaluating the total shear stability of VI-improved oils and is also being used for interpreting laboratory engine friction testing.