And a Shell ahead. I pull in and stop, exhausted. It'll be awhile before I dare touch the radiator cap, and I can use the rest. Twenty minutes pass. It's hot under the hood.
Menacing bubbles seep from the joint between the block and the head.
But it's just a little dribble. Maybe it's nothing. The radiator overflow is half-full. The last time I had this problem it was because the overflow tank had a pinhole in the bottom, and every time the engine got warm, it would send coolant to the tank, and it would run out onto the ground, and eventually so much would disappear that way that the engine would overheat, and I would have to refill it. I patched that tank, finally bought a new one.