I'm very curious now that I know somewhat how hydrostatic systems work. On various machines I occasionally run into an overheat situation and the hydrostatic transmission either loses almost all power or just starts to slow down. If it's a piston pump how does this happen? Is there a certain amount of gap that when the fluid becomes really hot and loses viscosity it just flows through the pump and can't build pressure? Or is it somthing on the side of the motors? Built in safety mech like a mechanical overheat bypass? I'm just curious what actually causes a hydrostatic transmission to lose power when it gets to hot. Thanks!