P.S. The viscosity of water (how it all started). The viscosity of all liquids decreases with increasing temperature, the question is by how much. Here's the good oil from the Chemical Rubber Handbook, one of the Bibles of the chemistry profession, which tabulates the viscosities for water. They range from 1.787 centipoise for water at 0°C to 0.2818 centipoise for water at 100°C, or, in layman's terms, from very fluid to even more fluid.