If cooling system pressure rises, coolant is released to which tank?

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Multiple Choice

If cooling system pressure rises, coolant is released to which tank?

Explanation:
As the engine warms, the cooling system coolant expands and pressure rises. To handle this excess without forcing out of the system, the extra coolant is directed into the reserve tank (the expansion/overflow reservoir). This tank holds the coolant until the engine cools, at which point it is drawn back into the radiator to maintain proper coolant level and pressure. The radiator is the heat exchanger, not a storage for excess coolant, and the engine sump is for oil, not coolant.

As the engine warms, the cooling system coolant expands and pressure rises. To handle this excess without forcing out of the system, the extra coolant is directed into the reserve tank (the expansion/overflow reservoir). This tank holds the coolant until the engine cools, at which point it is drawn back into the radiator to maintain proper coolant level and pressure. The radiator is the heat exchanger, not a storage for excess coolant, and the engine sump is for oil, not coolant.

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