Notes regarding engine coolant - AH20.00-U-2080-01Z

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Corrosion protection/antifreeze must provide the following:

Adequate corrosion and cavitation protection for all components.
Antifreeze protection
Raising boiling point, the coolant does not evaporate as quickly. Coolant loss is prevented at high coolant temperatures.

Checking coolant in service

Before the start of the cold season, check the coolant for antifreeze protection.

In countries with high ambient temperatures, check corrosion protection/antifreeze concentration in coolant once a year.

The corrosion protection in the coolant diminishes during operation.

The coolant then has a corrosive effect.

The coolant should be used for a maximum of 3 years.

Before filling in new coolant, flush the old coolant from the cooling system.

Concentration

Approx. 50 % by volume of antifreeze must be added to water This concentration provides antifreeze protection down to approx. -37°C. A higher concentration is only practical with even lower ambient temperatures.

55 % by volume of corrosion protection/antifreeze agent provides antifreeze protection down to approx. -45°C.

Exceeding 55 % by volume of corrosion protection/antifreeze agent reduces the antifreeze protection as well as the heat dissipating ability of the coolant.

Water

Use water that is clean and not too hard. Frequently, however not always, drinking water meets the requirements. The content of solubles in the water can be of importance for the forming of corrosion. If in doubt, have the water analyzed.

Disposal of coolant

Old coolant must be disposed of according to local laws or waste water/environmental regulations.