1.1 ,This test method covers the measurement of the viscosity of drive line lubricants (gear oils, automatic transmission fluids, and so forth) with a constant shear stress viscometer at temperatures from –,40 ,°,C to 10 ,°,C after a prescribed preheat and controlled cooling to the final test temperature. The precision is stated for test temperatures from –,40 ,°,C to –,26 ,°,C.