in a car i had i drove to get a new radiator 25 miles away, i topped the coolant up b4 i left. i got to the shop, bought the rad, topped up again and drove back. i got 12 miles b4 the engine died. the leak had just got bigger, engine wrecked. needed a new head, pistons skimmed etc. £700 damage and nearly got killed by cars as i broke down on a dark wet winter night near a corner! hope this is not whats happened urs mate.