© Scania CV 2011
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8. Every 2,400 hours:
Checking the coolant
Coolant should be checked as follows:
a)
Check the appearance of the coolant.
b)
Coolant with glycol only: Check the glycol content.
c)
Coolant containing only Scania Corrosion Inhibitor:
Check the corrosion inhibitor content.
The composition of the coolant is described in more detail under
"Starting and running".
a)
Checking the appearance of the coolant
- Pour a small amount of coolant in a container, and check that the coolant
is pure and clear.
- If the coolant is contaminated or cloudy: consider changing the coolant
- Water for the coolant must be clean and free from contamination.
- Use drinking water with a pH of 6-9.
b)
Checking the glycol content
If there is a danger of freezing, use only glycol as protection against corrosion
in the coolant.
- Cooling systems with glycol should contain at least 30% glycol by
volume to provide acceptable protection against corrosion.
- 30% glycol by volume provides antifreeze protection down to -16°C. If
additional antifreeze protection is required, see the table on the next
page to help you calculate how much glycol you need.
Scania recommends only nitrite-free antifreeze glycols with the following
supplier designations:
BASF G48 or BASF D542
- Always add glycol if the glycol content drops below 30% by volume. A
glycol content above 60% by volume will not provide greater protection
against freezing.
- 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
starts to form.
Note:
The coolant should be changed when the cooling system is
cleaned: every 4,800 hours or at least every 5 years.
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:
min 30% glycol by volume
max 60% glycol by volume
If there is no danger of freezing:
8-12% by volume
Scania Corrosion Inhibitor
The coolant should be
pre-mixed when it is poured
into the cooling system.
Never top up with only water or
only glycol.
Ethylene glycol can
be fatal if ingested.
Avoid skin contact
with glycol.
The recommended glycols must
not be mixed with glycol
containing nitrite-based
corrosion inhibitor.
Risk of a build-up of sludge and
reduced cooling capacity.
Important
!
WARNING
!
