the overflow hose on my mates car was snapped off at the bottle and it was inconvenient the car leaked about a litre of water a minute from the water pump so we put the hose from the washer bottle and connected it to the overflow bottle hose so when its running a bit dry we just squirt some water in and it gets us another 10ks before we have to fill the radiator and washer bottle up again.......... got 5, 2 litre coke bottles of water in the boot