I have a enclosed system for cooling bearing housings with oil. I need to calculate the rough pressure that will be produced when the oil pump is switched on. The oil will be pumped from a small tank, through the system and back into the tank. Pipe diameter = 10.8mm Pipe length = aprox 2m Flow rate = 250L/s Viscosity (this is where I get confused about Kinematic vs Dynamic) I am stuck on how to even get started on this. Is there a simple equation/rule of thumb that would allow me to get a rough value?