Re: Coolant leaking not sure from where
Did you see where the heater cores where leaking before? If the coolant was not changed for a long time before, galvanic corrosion will occur inside the cooling system and pin holes can form quickly at the weakest points, which normally are the heater core coolant tubes or radiator tubes. This type of corrosion works very quick and once started, its very difficult to get rid of it, even after several flushes of the whole system. An other thing which could happen is if the ground for the starter motor is bad. The high starter current will try to find its way via other, less resistant pads and can also cause the coolant tubes to cause leaks quickly.
For the first problem, you could measure with a digital volt meter between a good known ground (can be the battery negative) and the other probe inside the coolant (remove radiator cap with cold engine). The voltage should be less then 0.3V i believe. ( i will look it up tonight). This voltage difference is causing the galvanic corrosion inside the cooling system and the higher it is, the quicker the material lowest on the galvanic list will be eaten away. ( normally this is aluminum).This is a very agressive way of corrosion and mostly not seen, until its too late.