Dont worry.. you want it a little squishy.. As long as you cant pinch it shut or anything. Easy way to check is to let it run for about and hour. If its not over heating or anything dont owrry about it. If its warm, pinch the hose as hard as you can with one hand and if you feel the coolent moving then dont worry about it. If the hose is hot or or you dont feel anything, then have an actual mechanic chekc it out. NOT a service mechanictoday i put in a new thermostat. put antifreeze and burped the system now the hose is squishy. is that normal? with the old thermostat the hose was still hard with no thermostat the hose was hard now with this new thermostat the hose is squishy maybe the radiator cap broke when i dropped it? im confused now. maybe thers a leak.