Presently, the different methods available to measure the viscosity of fluids at low temperature with the Brookfield viscometer do not give entire satisfaction because of their low precision. A working group set up by the Technical Committee “Transmission Lubricants” (T.L.T.C.) of Groupement Français de Coordination (G.F.C.), member of C.E.C.
shortened test duration better precision,
shortened test duration
and was adopted by C.E.C. as tentative method under the number CEC L18-T76.