A portable information handling system supports processing components in a housing having first and second portions rotationally coupled by a hinge to move between closed and clamshell positions. Each housing portion includes a cooling fluid reservoir that stores cooling fluid for transfer of thermal energy from a processing component. Cooling fluid moves between the first and second housing portion cooling fluid reservoirs to provide a balanced weight distribution for the information handling system based upon the position of the housing portions, such as to increase the weight of a base portion of the housing resting on a support surface while decreasing the weight of an opposing lid portion.