Technical Paper
Development of a High Shear Rate Capillary Viscometer for Engine Oils
1980-02-01
800363
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.
