Was it the thought of thrusting jumpers that got you thinking that way?In a pervy kinda way
Unless you are that way inclined its good to keep them off your seat
May I suggest you use a tee and an isolation valve to fill the system with your fluids. Put a cap on the iso valve afterwards incase anyone tampers with it.
Softus is right BTW but I am assuming theres some reason for you wanting to test the system in this way
