Thread: Coolant leak only when shutting the car off.
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Old 06-10-2016, 11:47 AM   #19 (permalink)
SouthArk370Z
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My guess is that it is a pollution control to lessen amount of coolant discharged. I don't see where a two pressure-cap system would do any better at cooling than one and it costs more. But that's just a guess.
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