[Spin Drifter]

2002 996: Temperature is stable at just a tick over 180 F. It is always at this temperature after about 9 miles and just stays there. This is good. However, I had been getting warnings that coolant was low. I added a mix of the prescribed coolant with distilled water in to the reservoir. The warning went away. However after driving I notice a considerable amount of coolant leaking on the ground at the left rear corner of the car. The reservoir is now empty. However the warning doesn't come on and I have driving the car twice for distances just long enough for it to warm properly and the temperature is stable and the warnings don't come on. I do smell coolant when I park the car. I suspect a problem with just the reservoir or lines connecting it. Is there a good way to confirm? Pressure test? I wondered about the water pump but after the second time driving the car and the temperature remained stable and I saw no more leaking I think that this is unlikely. Any insights are appreciated.