my wife just got home so i told her to leave the car running. i opened the radiator cap expecting coolant to burst out but nothing happened, just some steam! i pressed the upper radiator hose with my hand and it was not too hard and hot. i also notice the coolant moving around the Resv. tank every time i pressed it. the lower one was not as hot and a bit softer. temp on car was about 90*C (just below the middle line).

Any ideas?