Altima 2.5 L4-2.5L (QR25DE) (2002)
Coolant: Service Precautions
WARNING:
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To avoid being scalded, never change the coolant when the engine is hot.
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Wrap a thick cloth around cap and carefully remove the cap. First, turn the cap a quarter of a turn to release built-up pressure. Then
turn the cap all the way.
CAUTION: Do not open the radiator cap while changing engine coolant. Fill the radiator only from the filler cap above the radiator upper hose with
radiator cap closed.