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33 6. Every 2400 hours: CHECKING THE COOLANT Coolant should be checked as follows: a) Check the appearance of the coolant. b) Coolant with only glycol: Check the glycol content. c) Coolant with only Scania Anti-corrosive: The composition of the coolant is described in detail under a) Checking the appearance of the coolant - Fill a container with a little coolant and check that it is clean and clear. - If the coolant is contaminated or cloudy: consider changing the coolant - Water added to the coolant should be clean and free from dirt of any kind. - Use drinkable water with a pH value of 6 - 9. b) Checking the glycol content If there is a danger of freezing, use only glycol as an anti-corrosive in the - Cooling systems with glycol should contain at least 30% glycol by volume to provide acceptable protection against corrosion. - A content of 30% glycol by volume protects against freezing down to -16°C. If further protection is needed, refer to the table on the next page We recommend only nitrite-free anti-freeze glycol with the following BASF G48 or BASF D542 - Always top up the anti-freeze if its glycol content drops below 30% by volume. A glycol content above 60% by volume will not provide greater - The table shows the temperature at which ice starts to form. The engine will freeze and break at appreciably lower temperatures, see diagram. - Ice forming in the coolant often causes malfunctioning without any risk of damage. The engine should not be subjected to heavy loads when ice Note: Change the coolant when cleaning the cooling system: every 4800 Important! If a coolant filter is used in the cooling system it must not contain an inhibitor. Coolant composition: If there is a danger of freezing: minimum 30% glycol by volume maximum 60% glycol by volume If there is no danger of freezing: 7-12% by volume Scania Anti-corrosive The coolant should be ready mixed when it is poured into the cooling system. Never top up with only water or only glycol. Ethylene glycol is highly dangerous if ingested and can prove fatal. Avoid skin contact with glycol. The recommended glycol must not be mixed with glycol having nitrite-based anti-corrosive. Risk for build up of sludge and reduced cooling capacity. |