Because system is under pressure and the reservoir is the highest place where the liquid is, it would just leak out if it is not tight enough. The information about boiling and destroying your engine is possible but unlikely to happen as long as you are careful.
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Answer:
Because system is under pressure and the reservoir is the highest place where the liquid is, it would just leak out if it is not tight enough. The information about boiling and destroying your engine is possible but unlikely to happen as long as you are careful.
Explanation:
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