OK... what are the chances of a catastrophic blow of this thing?

I'll take care of this, but I am supposed to drive about 100 miles today (50 there, 50 back).

It has been leaking for a while because I have been loosing coolant. I thought it was the radiator, which has a very slow seep on the upper seem, but it seems the loss of coolant has suddenly become a lot faster, leaving drips where it is parked.

This faster loss of coolant had me looking around and that's what I found.

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