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Old 09-22-2019, 08:34 PM
Mike1261 Mike1261 is offline
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Massive Coolant Expansion Tank Crack - Cause?

Waiting on AAA right now as the engine was overheating.

There's a massive 4-6" long crack down the corner of the expansion tank and all the coolant spewed out.

What causes this kind of crack? Is it just because it's old and brittle or is there a deeper issue?

After replacing the Stuck Open thermostat a year ago, my temp gauge has been consistent and perfect ever since. This is a big surprise to me so I'm just hoping it's crappy plastic giving out.

Attached is the best pic I can get right now.
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