Checking the density of the coolant (Opel Vectra A)

Before the start of the cold season, it is necessary to check the density of the coolant.

Warm up the engine.

Carefully unscrew the expansion tank cap.



Use a hydrometer to pump out some coolant and check its density.

If low density is detected, replace the coolant.



[Text copied from an internet website Opelbook.ru]