Abstract: Adequate flow response can be a problem with lubricants, transmission/differential fluids, and fuels at low temperatures. In developing lubricants or fuel formulations expecting to function well at low temperatures, it is critical to study their behavior over the broadest temperature range likely to be encountered. This can prove to be a complex task using the full scale equipment or even with instruments requiring single point measurements. This paper discusses a simple scanning approach using rotational viscometry that provides a broad temperature range yet specific evaluation of potential flow problems in lubricants and fuels.