a hard question

this may be a hard question and I’m not sure this is the right place to ask it but anyway.
i need to know the viscosity of mud or something that will look very close to it in a fluid sim.
i have looked every where but i cannot find the answer, if any one knows the answer or the how to change pa into Dynamic viscosity & kinematic viscosity please let me know.
sorry if this is to much of a nerdy question.:no: