A prototype of a new disk-type viscous pump with radial pumping grooves on its stator (as previously reported) has been successfully fabricated and experimentally tested for rotor speeds of 600, 900, 1200, 1500, and 1800 rpm, at a nominal rotor-stator gap of 133 μm. The test results of each speed reveal gradual increase in the working fluid temperature which makes its pressure-flow rate relationships no longer linear in practice. This can be the main practical problem in operating such a pump, and for this reason, a few methods of comparison between the test results and the analytical predictions have been proposed. By minimizing the time taken for data collection, the test results obtained agree very well with the analytical predictions for all the speeds tested. This experimental study has also demonstrated that this new disk-type viscous pump is practically feasible.