Thanks for the reply.
If the car has an overflow tank and the refill cap is on the tank, is there a second “radiator cap” on the actual radiator body? Or is the tank cap the one you’re referring to? I did check that after letting the car cool, found nothing, and refilled with water.
How long would I need to let the car run before the refilled overflow tank filled the radiator and started leaking again. I had the car running for ten minutes, and could see the fluid moving in the transparent tank. Do you think I just haven’t given it enough time?
I understood the risks I was running by driving without fluid, but I assumed that adding more fluid at the point where it started gushing would just pour out as well. I wanted to try to get home and not have to add a tow truck bill to my mounting costs. The temperature gauge never rose above half-way.