very disagreeable experience this weekend, on my way to this years benzfest in a borrowed 83 240, and after running hot, started to overheat. Ended up having the car towed about 60 miles back to a friends house, 140 short of where I started.

Figured Id take a look at the thermostat as a first place to start, and as usual, with zero force, two of the bolts broke off in the housing.



the thermostat itself was the problem, had physically broken as some point, and was unable to open-



However, since I broke the bolts off, I had to abandon the car, return the next day after hours in traffic, extract the bolts, and install new ones.

Since ive done this about 20 times on a dozen cars, im curios how common this is, it seems to me that im guaranteed at least one broken off thermostat housing bolt, and sometimes as many as three.

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